Ohm Standard Resistor Optics Positioner Laser Optics Bin 3 Unknown Optics Laser Optical Bin 3 Current Calibrator Calibrator Standard Pneumatic Calibrator Cable For Accelerometer Omega Calibrator Ea Optics Thermocouple Calibrator Optics Bin 4 Standard Inductor Unknown Application Calibrator 0 Piezoelectric Accelerometer Calibration Vibration Optical Bin 1 Optical Bin 3 Precision Calibrator Loop Calibrator Resistance Standard Voltage Standard Dead Weight Tester Tester Calibrator Resistance Decade Multifunction Calibrator Vintage Microscope Objective Guildline Calibrator Tested Frequency Standard Oscillator Ac Calibrator Portable Calibrator Process Calibrator Laser Optics Bin 1 Standard Capacitor Altek Calibrator Dc Calibrator Altek Model Decade Resistance Decade Resistance Box Hp Calibration Kit Ohm Resistance Standard Mil Spec Laser Optics Decade Resistor Mil Spec Laser Optical Optics Bin 3 Torque Tester Fluke Standard Esi Resistor Druck Calibrator Optics Assembly Huge Optics Dead Weight Pcb Accelerometer Fluke 5100B Transmation Pps Mm Dia Fl Optics Window Ametek Calibrator Dc Voltage Calibrator Optical Mounted Prism Laser Optics Optics Coated Lens Lens Mil Spec Laser Optics Pressure Calibration Flow Calibrator Calibrator Type Calibrator Thermometer Documenting Process Calibrator Fluke 5100B Calibrator Optics Fixture Iet Digital Calibrator Hp Calibrator Newport Optics 10-32 For Accelerometer Optics Prism Rubidium Frequency Standard Rubidium Standard Transmation Druck Dpi Optics Device Rubidium Frequency Mm Laser Optics Standard Resistor Temperature Calibrator Standard Cell Rtd Calibrator Bliley Quartz Pcb Piezotronics Piezotronics Quartz Crystal Frequency Altek Calibration Fixture Calibrator Hart Leitz Wetzlar Germany Microscope Frequency Calibrator Pure Chemical Coated Laser Optics Tektronix Calibration Calibration Model Calibrator Free Shipping Nist Calibrator Microscope Ocular Genrad Gr Gr General Radio Genrad Pressure Module Optical Prism Optics Coated Filter Rubidium Optics Glass Melles Griot Optics Voltage Calibrator Hart Scientific Torque Calibrator Thermometer Calibrator Dc Voltage Standard Programmable Calibrator Dry Calibrator Optics Lens Convex Datron Transmation Model Meter Calibrator Bliley Calibration System Torque Analyzer Filter Laser Optics Quartz Oscillator Optical Coated Optics Beam Splitter Calibrator Source Radio Genrad Vibration Sensor Verification Kit Calibrator Module Optics Micrometer Endevco Nice Optics Ametek Jofra Infrared Laser Optics Lamp Microscope Bin 11 Ea Lamp Dc Reference Standard Resonator Frequency Reference Standard Endevco Meggitt Accelerometer Accelerometer Pressure Charge Amplifier Guildline Standard Resistor- Accuracy 9330 Portable Pressure Calibrator Electro Scientific Industries Voltage Current Calibrator Calibration Standard Decade Capacitor Endevco Model Range Calibrator Ge Druck Dpi Bin Pmel Dead Weight Pressure Meter Calibration Resistance Calibrator Fluke 5700A Microscope Objective Optics Valhalla Scientific Leeds Northrup Primary Flow Calibrator Calibrator Multimeter Japan Optics Frequency Standard Calibrator Signal Resistor 100 Mirror Laser Optical Low Noise Cable Japan Microscope Beam Splitter Bliley Crystal Multifunction Process Calibrator Short Load Voltage Divider Dry Block Calibrator Mirror Laser Optics Torque Meter Nist Mirror Filter Optics Flat Calibrator Pump Transfer Standard Chip Resistor Calibration Test Datron Wavetek Analyzer Calibrator Positioner Stage Efratom Genrad Precision Decade Bin 7 Fluke Hart Scientific
 In 
 
Order by: 
Available to: 
Price: 
 - 
eBay Affiliate Links
$
12.60
Buy It Now
$2.99 Shipping
Condition: New
Location: China
A/D acquisition rate. YR-2180 weighing A/D module, an independently developed industrial grade digital weighing A/D conversion module. Sensor range 11-200kg ... moreSensor, set to 2 decimal points for Most, MAX displays 200.00kg.
$
11.71
Buy It Now
Free Shipping
Condition: New
Location: China
UART Serial Port to RS485 Converter Module RS485 ~ TTL Stable Module Component. Wireless Bluetooth Stereo Audio Module SBC MP3 AAC Fast Stream decoder. ... moreUSB to ESP8266 Serial Module TTL Wifi ESP-01 CH340G Developent Board Adapter USA.
$
16.18
Buy It Now
Free Shipping
Condition: New
Location: China
AD584-M Chip, highest accuracy and stability. - Power Consumption: Static current: 1 mA (max), low quiescent current is for battery-powered. - Load capacity: ... more10 mA. 10PCS piezo amplifiers discs Guitar Disc Accessory 27MM Thicken Piezo Diaphragm.
$
10.54
Buy It Now
$4.67 Shipping
Condition: New
Location: China
NOTE: This module is not polarity protection Dimensions: length x width x height = 8.5cm x 5.8cm x 3.3cm 1, input voltage: DC3.5 ~ 30V 2, the output voltage: ... moreDC0.8 ~ 29V 3, the output current: 10A (MAX) 4, the conversion efficiency: 92% (24V switch 12V / 2A when measured) 5, on-board voltage meter: displays the input voltage or output voltage, short press the button beneath the digital switch, the LED lights marked IN is the input voltage measurement, LED beacon of light measurement OUT is the output voltage. 6, voltage display factory calibrated, without additional calibration.
$
11.61
Buy It Now
Free Shipping
Condition: New
Location: China
Portable Electric Milking Machine Vacuum Pump Fit Sheep Goat Milking 2L Plug UK. Universal Bicycle Shift Speed 15 18 21 speed Lever Mountain Bike w/Cable ... moreTrigger. extended temperature probe, effective solution to a temperature module.
$
2.30
Buy It Now
$2.54 Shipping
Condition: Neu
Location: China
It integrates a red LED, an infrared LED, a photoelectric detector, an optical device, and a low noise electronic circuit with ambient light suppression. ... moreIt is used in wearable devices for heart rate and blood oxygen collection and detection.
$
849.00
Buy It Now
Free Shipping
Condition: New
Location: Walnut, United States
⚡Modular Expandable Power Backup System: 3072Wh EB3000 external batteries(LiFePO4) connected to the PECRON E2000LFP,The modular design make the power ... moresystem more flexible than ever. ⚡1600W Fast Charging: Plug in the adapter and solar panels, then you can top up PECRON E2000LFP with astonishing 1600W input rate.
$
0.99
Buy It Now
$3.00 Shipping
Condition: New
Location: China
It integrates a red LED, an infrared LED, a photoelectric detector, an optical device, and a low noise electronic circuit with ambient light suppression. ... moreIt is used in wearable devices for heart rate and blood oxygen collection and detection.
$
6.28
Buy It Now
$2.78 Shipping
Condition: Neu
Location: China
Range: 10V, 20V, 50V, 100V, 300V, 999V, optional. Distinguish by digital tube side label. 300V, 999V range: 1V. 10V range: 0.01V. Adapter Module. Step ... moreup module. Step down module. Display module.
$
3.86
Buy It Now
$3.00 Shipping
Condition: New
Location: China
And then press the left button to enter the cycle to display the alternate interval dF option, press the right button to change the value, the greater ... morethe value the longer interval. 4, the module size: 40x13mm ultra-small.
$
18.78
Buy It Now
$3.20 Shipping
Condition: Neu
Location: China
FG-100 DDS Function Signal Generator Module 1HZ-500KHz Sine +Square Wave w/case Description: Main features: Compact. Full-featured, simple operation, ... moreeasy to carry. You can use the adapter, can also be a lithium battery. Together with the oscilloscope can be used to test and measure the electronic circuit testing and debugging. Audio amplifier frequency characteristics and impulse response. As good accuracy and frequency stability of DDS, is also very suitable for scanning time oscilloscope calibration factor. Square wave output attenuator suitable oscilloscope and probe pulse characteristics adjustment. Features: The main output waveform: sine wave and square-wave. Triangle wave, sawtooth wave Maximum output amplitude:± 10Vpp(no-load) Output impedance:50ω±10% Dc bias: ± 10V(no-load) Display: LCD1602 Resolution:1 Hz Power supply: DC 3.5-10V Output frequency range: sine wave: 1Hz-500KHz Square-wave: 1 Hz- 20kHz(the valid range) Triangle wave:1 Hz- 20KHz(the valid range) Sawtooth wave:1 Hz ~ 20kHz(the valid range) Package list: 1X DDS Function Signal Generator Module 1X USB charger cable Feedback: We will leave 5 Star psitive Feedback after receiving the payment.5 Star Feedback is our life. Please help do not leave a neutral or negative feedback and Low score. Please do contact us to get a better solution! Your understanding will be appriciated! We believe all the problems can be solved if buyer works with us I am a honest seller. Please 100% trust! Your sasifation is our final goal! Our best service will let you 100% satisfy! Hope also to receive your 5 star positive feedback! Note: The economy shipping will be no tracking number. Only have the recording number to prove it sent If you need the tracking number. Please select the stardard shipping. Will be sent by the HK Post/China Post Registered mail Contact With Us: 1. Please contact us with any comments. Questions or suggestions that you may have, we will be happy to assist you. 2. You can contact us by leaving us an eBay message. Or em
$
11.99
Buy It Now
Free Shipping
Condition: New
Location: China
The surface of the product is rust-proofed. Gradually increase the power to the best effect, otherwise it may break the IR cards. It is the best IR cards ... moreyou choose, and you will get an incredible experience.
$
6.30
Buy It Now
$3.50 Shipping
Condition: New
Location: China
ESP-32S integrates dual-core. ESP32 is a single chip 2.4 GHz WiFi and Bluetooth combo chip designed with TSMC ultra low power 40 nm. ESP32 is the most ... moreintegrated solution for Wi-Fi + Bluetooth applications in the industry with less than 10.
$
10.71
Buy It Now
$1.48 Shipping
Condition: New
Location: 金东区, China
$
14.98
Buy It Now
$10.44 Shipping
Condition: Brand New
Location: Revesby Heights, Australia
Power-off status, press and hold the left button access the power, the display starts flashing, release the left button. Load Regulation S(I): 0.8% %/A. ... moreProject Hardware. 1 x Acrylic Case. General Interest.
$
19.87
Buy It Now
Free Shipping
Condition: New
Location: 龙岗区, China
Feature: -Using numerical control technology, adjusting voltage by keys -It's very convenient to use. You can output 1.0V-24V adjustable voltage by inserting ... moreUSB. -One-click on/off output -Power-off storage before power-off -Voltage and current can be self-calibrated Function: -Press ON/OFF button to turn on/off the output. -Short press SW button, switch display output voltage, current or alternate display; -Press any button for 2 seconds to activate voltage regulation and voltage flicker. Press SW button to increase voltage, ON/OFF button to reduce voltage, support long press (fast increase/decrease), wait for 2 seconds to exit automatically after adjustment is completed. -Press the ON/OFF button for 5 seconds, turn off the digital tube and wake up with any button.
$
4.76
Buy It Now
$3.00 Shipping
Condition: New
Location: China
3: MODBUS RTU Command support 03 06 function code. 7 :Under the MODBUS command mode, it can support up to 247 devices in parallel. RS485 Remote monitoring;. ... moreInterface introduction.
$
9.63
Buy It Now
Free Shipping
Condition: New
Location: China
Bark Stripper Log Carving Tools Bark Scraper Spudger Tool Hand Tools Fruit Tree. NE555+CD4017 water lamp, great for water lamp lovers. This item is a ... morewater lamp kit, which is a great digital accessories for DIY electronic production.
$
5.39
Buy It Now
$2.88 Shipping
Condition: New
Location: China
Power-off status, press and hold the left button access the power, the display starts flashing, release the left button. Load Regulation S(I) ≤0.8%. 1Set ... moreClear Enclosure ( Kits ).
$
20.23
Buy It Now
Free Shipping
Condition: New
Location: Seattle, United States
Made of high quality Aluminum, good thermal conductivity. Use for IC circuit board, motherboard, triode, MOS tube, TO-3P high power, heat sink, electronic ... moreaudio amplifier, module, power cooling fast, air-cooled aluminum heat sink, etc.
$
5.87
Buy It Now
$3.00 Shipping
Condition: New
Location: China
Standard 0.3 m +1.5 m module with two waterproof probes, temperature range -35 ~ 120 degrees. See the following table. For example, if you think the displayed ... moretemperature is 1 degree higher than the actual temperature, then set Ac: -1, so the electronic clock is automatically reduced by 1 degree and displayed.
$
14.87
Buy It Now
Free Shipping
Condition: New
Location: China
Stiff Angled Kitchen Scrub Brush Household Cleaning Brush Tile Brushes. AD584-M Chip, highest accuracy and stability. - Load capacity: 10 mA. | Cell Phones ... more& Accessories |. 12 Pcs Bath Salt Mold Household Bomb Making Molds The Bubble.
$
3700.00
Buy It Now
Free Shipping
Condition: New – Open box
Location: Lithuania
Video available if further proof of operation is needed.
$
23.63
Buy It Now
Free Shipping
Condition: New
Location: Ridgewood, United States
Do not reverse the input and output interface 3. - Conversion Efficiency: 92% (max.). 【High Precision】The buck converter consists of 36u thickened circuit ... moreboards, high-Q inductance with output LED indicator, and superior solid-state capacitors that can effectively filter out high frequency noise.
$
2.65
Buy It Now
$3.20 Shipping
Condition: New
Location: China
Item: LSM303DLH module (three-axis magnetic field + triaxial acceleration). Using the chip: LSM303DLH. The LSM303DLH requires few peripheral components ... moreand is easy to connect. C1 and C2 are the external matching capacitors of the set/reset circuit.
$
6.31
Buy It Now
$3.73 Shipping
Condition: Neu
Location: China
ESP32-CAM Type-C Board. ESP32-CAM Board. ESP32 specifications. OV2640 sensor. ISP with noise cancellation and dead pixel compensation. Supports interfaces ... moresuch as UART/SPI/I2C/PWM/ADC/DAC. Supports UXGA, SXGA, VGA, QVGA, QQVGA, CIF, QCIF and up to 40x30 size.
$
3.96
Buy It Now
$3.00 Shipping
Condition: New
Location: China
Extended temperature probe, effective solution to a temperature module. DF Do not set to 0, otherwise it will be black. 2, the temperature function range: ... more-40 to 120 degrees, resolution 0.1 degrees.
$
34.08
Buy It Now
$7.52 Shipping
Condition: New
Location: Germany
The Adafruit AS7262 6-Channel Light Sensor Breakout enables the simultaneous detection of six colors: red, orange, yellow, green, blue and purple. The ... moresensor channels can be queried via the I2C interface, either as 16-bit raw data or as calibrated decimal values. In addition, the sensor board has an on-board temperature sensor and a powerful LED for more accurate color detection. The 6-channel sensor is implemented using silicon interference filters that allow the following wavelengths to pass through: 450 nm, 500 nm, 550 nm, 570 nm, 600 nm and 650 nm. By default, communication takes place via I2C, but it can also be changed to UART via AT commands. The sensor is delivered on a breakout board with the appropriate firmware preprogrammed SPI flash memory. With the existing level converter, t.
$
11.39
Buy It Now
Free Shipping
Condition: New
Location: China
2 Bundles Breadboard Cable Aluminum Wire Kit Male Jumper Wires Solderless. 30 Pcs Breadboard Jumper Wires Guitar Pickup Hook- Stranded Electronic Guitars. ... more637 Pcs Glow in The Dark Sticker Luminous Stickers for Children.
$
8.55
Buy It Now
$16.97 Shipping
Condition: Brand New
Location: Birrong, Australia
No extra parts required. Extra long signal transmission distance. Ultra low energy consumption. 4-pin mounting. Sampling period: 2s. Ultra-small size. ... moreSuper cost-effective. Standard I2C and single-bus output.
$
9.13
Buy It Now
$2.99 Shipping
Condition: New
Location: China
RESTE: Reset port ( normal use pulled high. PCLK: pixel clock (output signal), chip output image signal as an image signal outputted from the clock. Standard ... moreSCCB interface compatible with I2C Interface. ).
$
95.54
Buy It Now
Free Shipping
Condition: New
Location: China
STM32F405RGT6: the high performance STM32 MCU which features MCU core board connector: for easily connecting the Core405R. MCU pins connector: VCC, GND, ... moreand all the I/O ports are accessible on expansion connectors for further expansion.
$
2.86
Buy It Now
$3.20 Shipping
Condition: New
Location: China
Item: LSM303DLH module (three-axis magnetic field + triaxial acceleration). Using the chip: LSM303DLH. The LSM303DLH requires few peripheral components ... moreand is easy to connect. C1 and C2 are the external matching capacitors of the set/reset circuit.
$
4.59
Buy It Now
$2.99 Shipping
Condition: New
Location: China
The circuit board used in this digital clock kit is a standard FR-4 epoxy fiber board, and the circuit boards are double-sided plated with antioxidant ... moregreen oil, which shows more class and excellent quality.
$
2.68
Buy It Now
$3.00 Shipping
Condition: New
Location: China
Mini RTCpro DS3231. DS3231 AT24C32. 4 clock chip: high-precision clock chip DS3231. DS3231 RTC. DS3231SN IC. DS3231SN 3 in 1 LED. Wiring instructions ... more(with Arduino uno r3 for example) (2) an electronic file data (including test procedures Arduino, PDF format schematics, data sheet).
$
3.96
Buy It Now
$3.00 Shipping
Condition: New
Location: China
Extended temperature probe, effective solution to a temperature module. DF Do not set to 0, otherwise it will be black. 2, the temperature function range: ... more-40 to 120 degrees, resolution 0.1 degrees.
$
3.08
Buy It Now
$2.88 Shipping
Condition: New
Location: China
Extended temperature probe, effective solution to a temperature module. DF Do not set to 0, otherwise it will be black. 2, the temperature function range: ... more-40 to 120 degrees, resolution 0.1 degrees.
$
4.79
Buy It Now
$3.00 Shipping
Condition: New
Location: China
3: MODBUS RTU Command support 03 06 function code. 7 :Under the MODBUS command mode, it can support up to 247 devices in parallel. RS485 Remote monitoring;. ... moreInterface introduction. We will try our best to avoid any quality problem.
$
14.75
Buy It Now
Free Shipping
Condition: New
Location: China
AD584-M Chip, highest accuracy and stability.5v, 7. - Power Consumption: Static current: 1 mA (max), low quiescent current is for battery-powered. - Load ... morecapacity: 10 mA. 5 Rolls Automotive Wiring Harness Tape Polyester Cloth Car Wire.
$
8.15
Buy It Now
Free Shipping
Condition: New
Location: China
25Needle Glue Bottle Pcs DIY Needle Paint Bottles Needle Bottle. good material for practical and use. With magnetoelectric effect function, more convenient ... moreto use.If you are looking for a new but affordable alloyhall effect sensor, then your searching is over.
$
16.94
Buy It Now
Free Shipping
Condition: New
Location: China
ESP8266 Weather Station Kit Temperature Humidity Atmosphetic Pressure OLED LCD Display Module Breadboards Electronics Component Set. ESP8266: CP2102 chip ... moreinside,Micro USB,4MB flash,full I/O port and wireless 802.11 supported IOT platform Arduino compatible.
$
11.61
Buy It Now
Free Shipping
Condition: New
Location: China
Extended temperature probe, effective solution to a temperature module. DF Do not set to 0, otherwise it will be black. This product is 3 in 1 Module, ... morenot for 3 colors. So the color of the product is Red.
$
15.19
Buy It Now
$1.99 Shipping
Condition: New
Location: China
The second signal generator consists of CD4060 and CD4013, which generates a square wave signal with a frequency of 1HZ. CD4060 is a 14-level binary frequency ... moredivider/oscillator. It consists of a 32768HZ oscillator with external resistors R44, R43, C1, C2 and Y1.
$
5.13
Buy It Now
$3.20 Shipping
Condition: New
Location: China
The module has high power output and efficiency (up to 96%). The output can be up to 65W (and can further reach 100W when enhance heat-transfer). Input ... moreCurrent: 6A maximum 10A output power: 100W. LED power indicator.
$
3.56
Buy It Now
$2.88 Shipping
Condition: New
Location: China
Extended temperature probe, effective solution to a temperature module. DF Do not set to 0, otherwise it will be black. 2, the temperature function range: ... more-40 to 120 degrees, resolution 0.1 degrees.
$
11.61
Buy It Now
Free Shipping
Condition: New
Location: China
Extended temperature probe, effective solution to a temperature module. DF Do not set to 0, otherwise it will be black. 2, the temperature function range: ... more-40 to 120 degrees, resolution 0.1 degrees.
$
9.93
Buy It Now
Free Shipping
Condition: New
Location: China
Feature: 1. Interface Type: Standard SCCB interface, compatible with I2C interface. The sensor uses unique sensor technology to improve image quality ... moreby reducing or eliminating optical or electronic defects such as fixed pattern noise, tailing, floating, etc., to obtain clear and stable color images.
$
3.56
Buy It Now
$3.00 Shipping
Condition: New
Location: China
Extended temperature probe, effective solution to a temperature module. DF Do not set to 0, otherwise it will be black. 2, the temperature function range: ... more-40 to 120 degrees, resolution 0.1 degrees.
$
4.92
Buy It Now
$2.54 Shipping
Condition: Neu
Location: China
Output power: the maximum power of a single board is 30W, and that of TWS is 30W+30W. Too large output is easy to cause protection. Bluetooth power amplifier, ... moreconnected to power and speaker, can be used, wireless transmission, high fidelity audio quality.
$
4.25
Buy It Now
$3.00 Shipping
Condition: New
Location: China
And then press the left button to enter the cycle to display the alternate interval dF option, press the right button to change the value, the greater ... morethe value the longer interval. 4, the module size: 40x13mm ultra-small.
$
12.97
Buy It Now
Free Shipping
Condition: New
Location: China
This is practical. A 3V backup battery has been added to the circuit. The clock didn't stop, but the nixie tube didn't show. Battery backup for incoming ... morecalls will not work. 1 set of LED display kit.
$
12.35
Buy It Now
$3.50 Shipping
Condition: New
Location: China
Users can develop a different wifi clock based on their own ideas. Remove the 18650 lithium battery when programming to avoid programming failure. If ... morethe current is too high, the charging chip may generate serious heat.
$
23.86
Buy It Now
$2.78 Shipping
Condition: Neu
Location: China
DC4V-10V DDS function signal generator (1HZ-500KHZ) YM-100. DDS frequency range: 1Hz-500KHz. DC3.7-10V DDS function signal generator module (1HZ-500KHZ) ... moreFG-100. DDS function (waveform) signal generator.
$
12.47
Buy It Now
$2.54 Shipping
Condition: Neu
Location: China
Buck-boost Module only, other accessories demo in the picture is not included. Type: Buck-boost Module. 1 Pc x Buck-boost Module. Output power: under ... morenatural heat dissipation 80W. Anti-backflow at the output: Yes, can be directly connected to the battery.
$
0.99
Buy It Now
$2.88 Shipping
Condition: New
Location: China
It integrates a red LED, an infrared LED, a photoelectric detector, an optical device, and a low noise electronic circuit with ambient light suppression. ... moreIt is used in wearable devices for heart rate and blood oxygen collection and detection.
$
9.70
Buy It Now
Free Shipping
Condition: New
Location: United States
10 x 2W 1000V 2A Bridge Diode Rectifier Electronic Components DIY Tool Kit Black. When the right “OUT” LED light, it shows output, the left “IN” LED shows ... moreinput. Input reverse polarity protection. Output current:2A.
$
2.73
Buy It Now
$2.78 Shipping
Condition: Neu
Location: China
It integrates a red LED, an infrared LED, a photoelectric detector, an optical device, and a low noise electronic circuit with ambient light suppression. ... moreIt is used in wearable devices for heart rate and blood oxygen collection and detection.
$
6.88
Buy It Now
$2.88 Shipping
Condition: New
Location: China
1X SGP30 air quality sensor module. The circuit structure is simple and reasonable, and the operation is simple. color: blue.
$
3.67
Buy It Now
$3.99 Shipping
Condition: New
Location: China
The circuit board used in this digital clock kit is a standard FR-4 epoxy fiber board, and the circuit boards are double-sided plated with antioxidant ... moregreen oil, which shows more class and excellent quality.
$
4.38
Buy It Now
$3.50 Shipping
Condition: New
Location: China
The circuit board used in this digital clock kit is a standard FR-4 epoxy fiber board, and the circuit boards are double-sided plated with antioxidant ... moregreen oil, which shows more class and excellent quality.
1 2 3 4 5 6 7 8 9 10 11
 In