In 
 
Order by: 
Available to: 
Price: 
 - 
eBay Affiliate Links
$
64.53
Buy It Now
$1.99 Shipping
Condition: New
Location: China
Default: 433MHz. Communication interface RS232 / RS485. Available for RS232 and RS485. RS485 :1 4 3.81mm. Transmitting current 945 1050 1155 mA 37dBm(5W). ... moreRS232 :DB9. In open and clear air, with maximum power, 5dBi antenna gain, height of 2m.
$
2.90
Buy It Now
$3.00 Shipping
Condition: New
Location: China
SRX882 Superheterodyne Receiver Module STX882 Ask Transmitter Module Antenna New. STX882 is a low cost, small size, ultra-high-power, low harmonic of ... morethe's ASK transmitter module. STX882 Features SRX882 is a micro power strong driving force super heterodyne receiver module.
$
6.69
Buy It Now
$3.00 Shipping
Condition: New
Location: China
Si4463 is a high-performance low current 433MHz transceiver is a EZRadioPRO series, including a complete transmitter and receiver. Si4463 has a narrow-band ... morephase noise and better concession band applications, with blocking and select properties, such as, FCC Part90 and 169MHz wireless MBus.
$
2.38
Buy It Now
$3.59 Shipping
Condition: New
Location: China
Product Name: 10pcs 433MHz Helical antenna Feature: Name: 433M spring antenna Model(Model) XL433M-T1. Spring antenna in a cost-effective. Can be used ... morefor a variety of 433MHz wireless device, such as wireless module CC1100\ CC1020\ NRF905\ NRF903\ SI4432 and other products, ease of use, performance, and to use soldered directly on the antenna of a wireless module. Electrical Data: Frequency Range(MHz)433MHz+/6MHz Gain(dBi)2.2 V.S.W.R: Input Impedance( OHM)50 Max-power(dBm)30 Weight(g)1.3 Diameter(mm)5 Length(mm)26+/1(Including welding part length) Height(mm)20+/1(Exposed parts. Does not contain the welding part length) mm)6+/1 Color:auratus Connector Type:direct weldment. Maybe you also need the following parts $ 9.61 + free shipping $ 3.61 + free shipping $ 1.5 + free shipping $ 3.7 + free shipping For more quantity. Please contact us 1) We accept PayPal payment ONLY.
$
3.51
Buy It Now
$3.50 Shipping
Condition: New
Location: China
Using the latest version of the U.S. SI4432 IC, stable performance. 1pcs SI4432 433MHz 1000M wireless transceiver module. Digital received signal strength ... moreindication (RSSI). Arduino Module. 9 nSEL Serial interface choice input pins.
$
21.90
Buy It Now
Free Shipping
Condition: New
Location: China
$
9.92
Buy It Now
Free Shipping
Condition: New
Location: China
E330-400T13S is a small size, low power consumption, low cost, ultra-high cost-effective serial port module, integrated transceiver, covering 433MHz and ... more470MHz frequency bands. The module supports transparent transmission and fixed-point transmission modes, supports LDC single-point wake-up, software multi-level airspeed adjustable, and can be applied to a variety of wireless transmission applications.
$
13.70
Buy It Now
$2.99 Shipping
Condition: New
Location: China
$
28.80
Buy It Now
Free Shipping
Condition: New
Location: China
$
11.58
Buy It Now
Free Shipping
Condition: New
Location: China
Wireless Serial Port Module E310 Series 433/915MHz Half-Duplex Transparent Transmission 23dBm Low Power Consumption Module.
$
1.14
Buy It Now
$3.40 Shipping
Condition: New
Location: China
433MHZ Transmitter. the module transmitting frequency: 433MHz. on-board single-chip ASK transmitter chip SYN115/F115. module output power:
$
1.29
Buy It Now
$3.50 Shipping
Condition: New
Location: China
Arduino Module. Receiving frequency: 433.92MHZ. Antenna position has also affected the reception of the module, the installation, the antenna as possible ... morestraight away from the shield, high pressure, and interference source; frequency used to receive, decode and oscillation resistor should match with the transmitter.
$
4.99
Buy It Now
$2.89 Shipping
Condition: New
Location: China
RF Frequency: 433MHZ. Channel: 1CH. Press the learning code. 10A 30VDC / 10A 28VDC. Jog/Non-Latched: Press one button is Working /ON. Rated load:10A 250VAC ... more/ 10A 125VAC. Output Current: 10A. RF Working mode:Super heterodyne receiver.
$
18.96
Buy It Now
Free Shipping
Condition: New
Location: China
$
22.33
Buy It Now
Free Shipping
Condition: New
Location: China
Product introduction: E22-400T33D is a new generation of LoRa wireless module. It is a wireless serial port module (UART) based on SX1262 radio frequency ... morechip.
$
22.33
Buy It Now
Free Shipping
Condition: New
Location: China
Product introduction: E22-400T33D is a new generation of LoRa wireless module. It is a wireless serial port module (UART) based on SX1262 radio frequency ... morechip.
$
2.87
Buy It Now
$3.00 Shipping
Condition: New
Location: China
(1) receiver sensitivity reach -115dBm;. (3) wireless security alarm;. (4) Wireless doorbell;. (6) a wireless data transmission. We will leave it for ... moreeveryone that leaves it for us.
$
1.88
Buy It Now
$3.50 Shipping
Condition: New
Location: China
RX470 receiver module is a UHF ASK receiver demodulator, supporting ASK and OOK modulation. Good radiation suppression capability of the local oscillation, ... morecan be more than one receiver module to work together (i.e., single-emitter multi-receiver) and will not interfere with each other, together with the use of the reception distance is not affected.
$
6.07
Buy It Now
$3.50 Shipping
Condition: New
Location: China
TX Technical Specifications: A. Working voltage: 3V~12V B. Working current: max≤40mA(12V) Min≤9mA(3V) C. Resonance mode: sound wave resonance(SAW) D. ... moreModulation mode: ASK/OOK E. Working frequency: 315MHz-433.92MHz. Customized frequency is available. F. Transmission power: 25mW(315MHz at 12V) G. Frequency error: +150kHz(max) H. Velocity: ≤10Kbps I. Self-owned codes: negative RX Technical Specifications: A. Working voltage: 5.0VDC +0.5V B. Working current:≤5.5mA(5.0VDC) C. Working principle: single chip superregeneration receiving D. Working method: OOK/ASK E. Working frequency: 315MHz-433.92MHz. Customized frequency is available. F. Bandwidth: 2MHz(315MHz. Having result from testing at lowing the sensitivity 3dBm) G. Sensitivity: excel–100dBm(50Ω) H. Transmitting velocity: Package: 5 X 433Mhz RF transmitter and receiver link kit for Arduino/ARM/MCU WL We sell Electronic Components including Capacitors. Resistors, LEDs, Transistors, Diodes, Relays, Rubber Feet, Voltage Regulators, IC's, Bridge Rectifiers, Op Amps, Potentiometers, Ferrites, Inductors, Fans, Teflon Tubing, and other hard to find parts. We accepts the following payment methods: 1. We only accept Paypal. Shipping information: This item will be shipped worldwild by regular mail in 2 business day. We only ship to paypal address.please give us the exact address and phone# through paypal. Delivery time: Normally delivery time. Asia countries. 8 to 20 days. UK.Ireland 10 to 20 days. USA.Canada,Australia. 10 to 20 days. Western Europe. 10 to 20 days. France.Italy and other countries. 25 to 40 days. REFUNDS& RETURN: We offer a warranty on all items that we sold. Item will be tested before ship.It will be in good condition,if there are some problems with the item,feel free to contact us. Please Email us to notify a defective item. Unless otherwise specified. This item comes with 14 days warranty from the shipment date. You must contact us before returning any product. All returns must be made within 14 days from this shipment date. Return must be
$
29.66
Buy It Now
Free Shipping
Condition: New
Location: China
Product: 1pcs CC430F5137 QFN48 CC430F5137IRGZR new. Type: CC430F5137 QFN48. Compact Black Peristaltic Pump Head Mini Small Flow Stepper Motor Kit - OEM. ... moreCS6364C Twist Locking Generator Connector Female Power Cord Plug 50A Heavy Duty.
$
48.60
Buy It Now
Free Shipping
Condition: New
Location: China
E90-DTU(400SL33) is a wireless data transmission radio using military-grade LoRa modulation technology.
$
17.93
Buy It Now
Free Shipping
Condition: New
Location: China
$
0.99
Buy It Now
$3.50 Shipping
Condition: New
Location: China
1 x RXB12 433Mhz Superheterodyne Wireless Receiver Precise 3.3V-5.5V for Arduino/AVR. (1) receiver sensitivity reach -115dBm;. (3) wireless security alarm;. ... more(4) Wireless doorbell;. (6) a wireless data transmission.
$
1.04
Buy It Now
$3.20 Shipping
Condition: New
Location: China
2PCS x H3V4F 3V 433Mhz MINI Wireless Receiver Module ASK Remote Transceiver Passthrough. Wireless Switch. Wireless doorbell. hope you could understand.
$
1.90
Buy It Now
$3.50 Shipping
Condition: New
Location: China
1 x Wireless Receiver Module. (1) receiver sensitivity reach -114dBm;. (3) wireless security alarm;. (6) Wireless parking lock. (1) car remote door switch ... more(RKE);.
$
4.98
Buy It Now
$5.00 Shipping
Condition: New
Location: China
STX882 is a low cost, small size, ultra-high-power, low harmonic of the's ASK transmitter module. STX882 Features SRX882 is a micro power strong driving ... moreforce super heterodyne receiver module. It is can support our transmitter module STX882/STX888.
$
7.89
Buy It Now
Free Shipping
Condition: New
Location: China
[Introduction] : E07-M1101D-TH is a SMD wireless transceiver module, operates at 433MHz with small-size and 10mW transmitting power. Default: 433MHz (26MHz ... moreoscillator). 10dBm(10mW). In open and clear air, with maximum power, 5dBi antenna gain, height of 2m.
$
11.39
Buy It Now
Free Shipping
Condition: New
Location: Monroe Township, United States
Welcome to visit our RFbat Shop! | | | | Store Categories RF Connector Payment About Us 433MHz RF Transceiver CC1101 Module matched with Antenna. Product ... moreDescription Features: Using high-performance TI-Chipcon's CC1101 radio chip.The maximum transmission data rates up to 500Kbps,and can modify the software Porter rates, transmission distance reached to be 300 meters,having wireless wake-up functions.sensitivity to-110dBm, high reliability, Work on the 433MHz band, Operating voltage: 1.8V ~ 3.6V. Recommend close to 3.6V, but not more than 3.6V(3.3V is recommended) The maximum operating rate of 500kbps. Support for 2-FSK, GFSK and MSK modulation, High sensitivity(1.2Kbps under-110dBm. 1% packet error rate) The built-in hardware-to-multipoint communication CRC error detection. And address control, A lower current consumption(RX in. 15.6mA, 2.4Kbps, 433MHz) Programmable control of output power. For all the support frequencies of up to +10 dBm, Wireless wake-up functionality to support low-power electromagnetic activation. Wireless wake-up low-power sleep state of the equipment, Support the transmission channel before the auto-clean-up visits(CCA) The Carrier Sense System, Fast frequency changes brought about by a suitable synthesizer frequency hopping systems, module can be software-based address. Software programming is very convenient, Standard DIP spacing interfaces for embedded applications, Separate 64-byte RX and TX data FIFO, Transmission Distance:to the actual transmission distance 250-300 meters(depending on the specific situation of the environment and communication baud rate settings. Etc. may be) Module Size: 29mm* 16mm(the size without including-SMA head and antenna) Package included: 1pcs 433MHz CC1101 RF Module.And 1pcs Antenna, Package included 1pcs 433MHz RF Transceiver CC1101 Module matched with Antenna. Welcome to visit other items in our Shop Rf Connector Rf Adapter Cable Assemblies WIFI-Antenna GPS-Antenna GSM-Antenna Yagi-Antenna Aluminum Project Box Crimp Tool POE Please read th
$
32.19
Buy It Now
Free Shipping
Condition: New
Location: China
$
5.94
Buy It Now
$3.20 Shipping
Condition: New
Location: China
Welcome to visit our RFbat Shop! | | | | Store Categories RF Connector Payment About Us 433MHz RF Transceiver CC1101 Module matched with Antenna. Product ... moreDescription Features: Using high-performance TI-Chipcon's CC1101 radio chip.The maximum transmission data rates up to 500Kbps,and can modify the software Porter rates, transmission distance reached to be 300 meters,having wireless wake-up functions.sensitivity to-110dBm, high reliability, Work on the 433MHz band, Operating voltage: 1.8V ~ 3.6V. Recommend close to 3.6V, but not more than 3.6V(3.3V is recommended) The maximum operating rate of 500kbps. Support for 2-FSK, GFSK and MSK modulation, High sensitivity(1.2Kbps under-110dBm. 1% packet error rate) The built-in hardware-to-multipoint communication CRC error detection. And address control, A lower current consumption(RX in. 15.6mA, 2.4Kbps, 433MHz) Programmable control of output power. For all the support frequencies of up to +10 dBm, Wireless wake-up functionality to support low-power electromagnetic activation. Wireless wake-up low-power sleep state of the equipment, Support the transmission channel before the auto-clean-up visits(CCA) The Carrier Sense System, Fast frequency changes brought about by a suitable synthesizer frequency hopping systems, module can be software-based address. Software programming is very convenient, Standard DIP spacing interfaces for embedded applications, Separate 64-byte RX and TX data FIFO, Transmission Distance:to the actual transmission distance 250-300 meters(depending on the specific situation of the environment and communication baud rate settings. Etc. may be) Module Size: 29mm* 16mm(the size without including-SMA head and antenna) Package included: 1pcs 433MHz CC1101 RF Module.And 1pcs Antenna, Package included 1pcs 433MHz RF Transceiver CC1101 Module matched with Antenna. Welcome to visit other items in our Shop Rf Connector Rf Adapter Cable Assemblies WIFI-Antenna GPS-Antenna GSM-Antenna Yagi-Antenna Aluminum Project Box Crimp Tool POE Please read th
$
3.68
Buy It Now
$2.84 Shipping
Condition: New
Location: China
(5) The wireless industrial controller; Characteristic:(1) receiver sensitivity reach -116dBm;
$
21.90
Buy It Now
Free Shipping
Condition: New
Location: China
$
33.52
Buy It Now
Free Shipping
Condition: New
Location: China
◆If there are no special circumstances, your product will not be delayed in arrival.
$
9.74
Buy It Now
Free Shipping
Condition: New
Location: China
Transmitter speed:4KB/S. Transmitter power:10mW. Attenna:25cm Single core wire or multi-core wire. Antenna:32CM single core wire, heliciform shaped. Working ... moremode: AM. Size:19 19mm.
$
6.64
Buy It Now
$2.99 Shipping
Condition: New
Location: China
Using LoRaTM spread spectrum modulation. Support automatic RF signal detection, CAD mode and ultra-high speed AFC. Excellent resistance to blocking. Support ... moreFSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
$
15.24
Buy It Now
Free Shipping
Condition: New
Location: Jamaica, United States
Your smartphone or tablet is connected to a 2.4G WIFI that can access the Internet (5G WIFI is not supported temporarily). Turn on Bluetooth on your phone. ... more75 73 20mm (bare board). All products are quality checked.
$
2.99
Buy It Now
$2.99 Shipping
Condition: New
Location: China
Using the latest version of the U.S. SI4432 IC, stable performance. 1pcs SI4432 433MHz 1000M wireless transceiver module. Digital received signal strength ... moreindication (RSSI). Wireless PC peripherals. 9 nSEL Serial interface choice input pins.
$
17.86
Buy It Now
Free Shipping
Condition: New
Location: United States
RS485 RS485, RS232 RS232, USB USB. USb RS485, USb RS232, RS485 RS232. They work as well as wired RS485 bus. The master device sends data and the slave ... moredevice receives data.
$
78.72
Buy It Now
Free Shipping
Condition: New
Location: China
PLC Radio Modem E90-DTU(433L37). Wireless Transceiver LoRa RS232 RS485 433MHz 5W. Default: 433MHz. Communication interface RS232 / RS485. Transmitting ... morecurrent 1024 1138 1252 mA 37dBm(5W). Stand-by current 45 50 55 mA.
$
11.76
Buy It Now
Free Shipping
Condition: New
Location: China
E49-400T20D 433MHz UART 20dBm 100mW TTL IoT DIP Wireless Transceiver Module.
$
9.79
Buy It Now
Free Shipping
Condition: New
Location: China
$
8.69
Buy It Now
Free Shipping
Condition: New
Location: United States
Headset Smart Watch TWS Wireless Bluetooth Dual Headset Call Smartwatch. Due to different lighting in the photos and differences in monitors, the pictures ... moremay not reflect the actual colour of the object.
$
11.97
Buy It Now
Free Shipping
Condition: New
Location: China
E22-400T22S 1B SMD UART SX1268 SX1262 Wireless Transmitter and Receiver SMD 433MHz RF Module RSSI NetWork TCXO Transceiver. Default: 433MHz. TTL UART ... moreoutputs, connects to external RXD (MCU, PC) input pin.
$
0.99
Buy It Now
$2.88 Shipping
Condition: New
Location: China
Security alarm. Wireless Switch. Wireless doorbell.
$
10.25
Buy It Now
Free Shipping
Condition: New
Location: China
CC1101: 387-464 MHz and 779-928 MHz. 1Pc x Wireless Module. Support RSSI signal strength detection and carrier sense function. Instantaneous maximum working ... morecurrent:
$
25.86
Buy It Now
Free Shipping
Condition: New
Location: China
$
4.71
Buy It Now
$3.59 Shipping
Condition: New
Location: China
Smart Wristband. Maternal and Child Health. Blood Pressure Monitor. Earring/Quartz watches. Beauty tools. 3D Printer Accessories. 3D Printers. 3D Printers ... more& Accessories.
$
0.99
Buy It Now
$3.00 Shipping
Condition: New
Location: China
(1) receiver sensitivity reach -115dBm;. (3) wireless security alarm;. (4) Wireless doorbell;. (6) a wireless data transmission. We will leave it for ... moreeveryone that leaves it for us.
$
7.22
Buy It Now
Free Shipping
Condition: New
Location: China
Store Categroy. Relay Voice&Camera Digital Voltmeter Wholesale&Combination ICs Cables&Connectors PCB board& Breadboard Tools Component ... moreOthe r Helpful Links Store Newsletter. Add my Store to your Favorites and receive my email newsletters about new items and special promotions! General Interest. Hot Products. $17.50 $ 57.00 $ 4.33 $ 2.50 $ 7.95 $ 5.24 $ 1.90 Name: 433M spring antenna Model(Model) XL433M-T1 Spring antenna in a cost-effective. Can be used for a variety of 433MHz wireless device, such as wireless module CC1100\ CC1020\ NRF905\ NRF903\ SI4432 and other products, ease of use, performance, and to use soldered directly on the antenna of a wireless module. Electrical Data? Frequency Range(MHz)433MHz+/6MHz Gain(dBi)2.2 V.S.W.R? Input Impedance( OHM)50 Max-power(dBm)30 Weight(g)1.3 Diameter(mm)5 Length(mm)26+/1(Including welding part length) Height(mm)20+/1?Exposed parts. Does not contain the welding part length? mm)6+/1 Color?auratus Connector Type?direct weldment SHIPPING PAYMENT. RETURNS. FEEDBACK. ABOUT US. 1)All items will be shipped to your paypal address.Please update your latest address when you check out.And please make sure to provide us with correct,precise and detailed shipping address. 2)Most of the items will be shipped via Hongkong Airmail/Singapore Airmail.To US customers.We will send the package via E-packet. 3)All items will be shipped in 1-2 business days(excluding Sat.Sun& Holiday) after payment received and cleared. For the long-time holiday, we'll post the info on our store and reply you automatically via emails. 4)Tax:We will do our best to help you to clear the goods.And the tax depends on each country custom. 5)If you don't receive items over 30 business days.Please make sure to contact us before leaving any neutral or negative feedbacks.We'll try our best to help you solve the problem. 6)The product in our store is free shipping. But the shipping method is different based on your order.If your order is more than $50.We will send the items to you with
$
9.49
Buy It Now
Free Shipping
Condition: New
Location: Monroe Township, United States
Wireless Serial Port Module. Description Power supply voltage: 3.2 V- 5.5 V.if the modules working long hours in emission state. Suggested that when the ... morepower supply voltage is greater than 4.5 V, you need concatenating a 1N4007 diode to avoid module built-in LDO got fever) Default communication distance: about 600 m(communication distance is adjustable up to 1000 m. Air baud rate 5000 BPS) Default idle current: 16 ma(modules in different working mode of different current) Module size: 27.8mm*14.4mm*4mm. Operating frequency range(433.4 473.0 MHz. As many as 100 communication channel) maximum 100 mw fired power(can be set) Module supporting software upgrades. Default factory Settings: working mode FU3. Baud rate 9600 BPS, communication channel CH001(433.4 M) Packing List: 1Pcs 433Mhz HC-12 SI4463 Wireless Serial Port Module 1000m Replace Bluetooth SI4463 Payment 1.We accept Paypal only. 2.Please confirm your ebay shipping address is exact a fter payment. 3.If your purchased is more than £30.00. Please offer your phone number with shipping address. Delivery details 1.All items will be shipped by Airmail post within 1 business days. It takes approximately 15-25 days(USA.CA,AU,UK,DE) Other country 15-35 days. 2.Express by EMS. It must add 20 GBP shipping fee, it takes 5-10 workdays for delivery. If you need other Express(DHL,Fedex.UPS etc. please contact us to talk about shipping fee. 3.Once you purchase. Please DONOT leave negative, neutral feedback or open any case if you have not received item in 30 days, because we have mentioned the shipping time repeatedly. Contact us 新建网页 2 1.We offer retail and wholesale services. We can provide products in accordance with your requirements. If you have any questions or something to consult. Please send us ebay message. 2.All messages will be answered within 1 business day. If you do not receive our reply. Please kindly re-sent your message and we will reply to you as soon as possible. 3.Our aim is to provide Top Level Customer Service. Business hours are
$
4.98
Buy It Now
$5.00 Shipping
Condition: New
Location: China
STX882 is a low cost, small size, ultra-high-power, low harmonic of the's ASK transmitter module. STX882 Features SRX882 is a micro power strong driving ... moreforce super heterodyne receiver module. It is can support our transmitter module STX882/STX888.
$
4.09
Buy It Now
$4.88 Shipping
Condition: New
Location: China
$
5.33
Buy It Now
$3.84 Shipping
Condition: Neu
Location: China
Wireless module. Step up module. Adapter Module. Step down module. Display module. Stable heat dissipation performance, easy to use. Breadboard Cable ... moreand Prototype. Wire size: 2.0MM pitch/40CM length.
$
10.79
Buy It Now
Free Shipping
Condition: New
Location: 金东区, China
CC1101: 387-464 MHz and 779-928 MHz. CC1100: 400-464 MHz and 800-928 MHz. Working frequency: (module: 387-464MHZ) Default working frequency: 433Mhz. Fast ... morefrequency synthesizer with proper frequency hopping system.
$
4.33
Buy It Now
$6.30 Shipping
Condition: Neu
Location: Neureut, Germany
Cable type: RF1.13(AWG32), Black or Gray. Model: H2_2DB_0.4_IPX4_FPC_01. Peak Gain:2dBi. Length of cable: 10cm, 15cm, 20cm. flexible printed circuit antenna. ... moreSize: 8x32mm (Antenna). Impedance: 50Ω. Products are to be sent from Germany.
$
2.88
Buy It Now
$3.00 Shipping
Condition: New
Location: China
Its highly integrated architecture allows for a minimum of external components whilst maintaining maximum design flexibility. 1PCS RFM69HW 868Mhz/433Mhz/915Mhz ... more+ 20dBm HopeRF Wireless Transceiver For Remote/HM.
$
9.74
Buy It Now
Free Shipping
Condition: New
Location: China
Model Number: 433MHZ Wireless Transmitter. Dissipation Power. Condition: New.
$
3.16
Buy It Now
$3.00 Shipping
Condition: New
Location: China
RF has high sensibility,within 3km can perform visual distance communication.Indoor signal can be all covered. Automation data acquisition. UART interface ... more(TTL level). Wireless sensing. However, we will try our best to minimize it.
$
78.72
Buy It Now
Free Shipping
Condition: New
Location: China
PLC Radio Modem E90-DTU(433L37). Wireless Transceiver LoRa RS232 RS485 433MHz 5W. Default: 433MHz. Communication interface RS232 / RS485. Transmitting ... morecurrent 1024 1138 1252 mA 37dBm(5W). Stand-by current 45 50 55 mA.
$
20.85
Buy It Now
Free Shipping
Condition: New
Location: China
E150-400T30S is a wireless serial port module (UART) based on LoRa radio frequency chip. It works in the 410.125~493.125MHz frequency band (default 433.125MHz) ... moreand adopts LoRa spread spectrum technology.
 In