434MHz RF Transceiver Module (UART)-100m

434MHz RF Transceiver Module (UART)-100m

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  • Product Code: RF-UART-434-100M
  • Warranty Period: 12 months
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If you are looking for long distance and easy to use serial wireless module, you have got it. This wireless serial port communication module is a new-generation multichannel embedded wireless data transmission module. Serial transceiver module is a low cost, high performance transparent FSK transceiver with operating at 434 MHz. It features small size, high output power, high sensitivity, long transmission distance and high communication data rate with auto set up for communication change and data receiving and transmission control. There is UART interface, it is easy to realize the wireless data transmission with only providing the UART data. It is flexible for the users to set the UART baud rate, frequency, output power, data rate, frequency deviation, receiving bandwidth etc parameters. It is your ideal choice for designing wireless data transmission products which can be widely used on wireless data transmission field.
The module is encapsulated with stamp hole, can adopt patch welding. There is a PCB antenna pedestal ANT1 on the module, and user can use external antenna of 434M frequency band through coaxial cable; there is also an antenna solder eye ANT2 in the module, and it is convenient for user to weld spring antenna. User could select one of these antennas according to use requirements. It is compatible (Wireless communication) with RFBee 434MHz UART Wireless module.
There is MCU inside the module, and user don’t need to program the module separately, and all transparent transmission mode is only responsible for receiving and sending serial port data, so it is convenient to use. The module adopts multiple serial port transparent transmission modes, and user could select them by AT command according to user's requirements. The average working current of three modes FU1, FU2 and FU3 in idle state is 80µa, 3.5mA an 22mA respectively, and the maximum working current is 100mA (in transmitting state).

Note: This is a transceiver (Transmitter and Receiver) module, you need 1 pair of this module for wireless communication.
Note: This wireless module cannot intercommunicate with the 1KM meters version (RF-UART-433-1KM) or RFBee 433MHz UART Wireless module as the frequency is not the same, not to forget, it is not compatible with the low cost RF transmitter and receiver too.
  • Wireless communication frequency band is 434M
  • Multiple types of serial port transparent transmission modes have respective features, and the mode is changed by command
  • User needn't program the modules, and four modes are only responsible for receiving and sending serial port data, and are convenient to use
  • Low current consumption; the idle current is 80μA, 3.5mA or 22mA, depending on the selected mode
  • The number of bytes sent to serial port of module unlimited to one time
  • All functions and parameters are changed by command, and can be saved in case of power failure
  • Working frequency: 434Mhz
  • Supply voltage: 3.3V to 5VDC
  • Communication distance: 1m to 40m indoor
  • Serial baud rate: 1.2Kbps to 115.2Kbps (default 9.6Kbps)
  • Receiving sensitivity: -112dBm to -95dBm
  • Transmit power: -30dBm to 10dBm
  • Interface protocol: UART/TTL, Half Duplex
  • Operating temperature: -40℃ to +85℃
  • Dimensions: 27.8 x 14.4 x 4mm


Hi, i'm trying to build my own wireless sensor for my house. is this rf transceiver is ready-to-use module?
should i program it first or i just plug and play?
( sobri, 16/03/2018 )
Hi, you have to program it first before you can use it. You may refer to the user manual at the attachment tab for more info.
When the module is configured as wireless IO. The SET pin initially gives HIGH. Is there any setting to change to it to LOW? ( Hafiz, 14/03/2018 )
Hi, we advise you to post a technical questions at our technical forum, as this session is only for short inquiry. Thanks.
Can this module be programmed to receive FM (voice) on 435.720 MHz ?
Need just the receiver, you have some other product that is only a FM (voice) receiver at this frequency ? (We have SAW filters at this frequency)
This is to be used in Argentina for radio amateur application. Will help if you have a pdf of the product.
If you can't answer, can you please send this question to manufacturer ?
Appreciate any answer pconver@gmail.com

( Pedro Converso, 06/03/2018 )
Hi, sorry it is not support to receive FM (voice) on 435.720 MHz. Thanks.
I will be using four transmitter and one receiver. How can i configure the transmitter to different channel? How can the receiver know the signal received from which transmitter? ( Soon Wei Fong, 18/01/2018 )

Is not that straight forward. Please check the tutorial that discuss about the possibilities: https://tutorial.cytron.io/2015/04/04/is-multipoint-wireless-communication-between-rfbee-module-possible/

If you have any further inquiry, please do discuss in our technical forum: https://forum.cytron.io

is it compatible with 433.92MHz Wifi Repeater? ( farah, 04/08/2017 )
Hi, sorry it is not compatible. 
Can I use this RFmodule to achieve point-to-multipoint connection for Arduino? ( Adam, 31/12/2016 )

Hi, yes sure you can make  point - to- multipoint connection to Arduino. Thanks. =)

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DescriptionDate AddedSizeAction
Fritzing File21/06/2019N/ADownload
Wireless 434M UART User's Manual21/06/2019N/ADownload
Fritzing Tutorial21/06/2019N/ADownload
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Tags: 434mhz, transceiver, module, (uart)-100m