4 Channel 433Mhz Receiver Transmitter Kit

4 Channel 433Mhz Receiver Transmitter Kit RX480 - TX118A

RF Relay Control Garage Door Shutter Curtain Socket Alarm LED Lighting Toy Car Home Automation

     The 4 channel 433MHz receiver transmitter kit consists of the RX480-E4 learning receiver module and the TX118SA-4 4 channel mini transmitter module. When the K1-K4 inputs of the transmitter are pulled to ground by a button or a microcontroller, the transmitted signal activates one of the D0-D3 outputs on the receiver. In this way 4 separate devices or functions are controlled remotely without running cables.

     The receiver module can also be operated with different transmitters compatible with the 1527 code. Using the learning button on the receiver, the codes of different transmitters and EV1527 coded remote controls are learned. Since every transmitter module has a unique ID address code, it does not interfere with other kits in the same environment. The output mode (momentary, self-locking or interlocking) is selected by the number of button presses during learning.

     The superheterodyne receiver works with -108dBm sensitivity and draws 5mA or less in standby. The D0-D3 outputs give CMOS signals at supply level: with a 5V supply the outputs are 5V, with a 3.3V supply they are 3.3V; the outputs are connected to the input of a relay board or a transistor driver circuit. Thanks to the wide DC 3V-24V supply range of the transmitter, it can be used with batteries, 12V accumulators or 24V systems.


Features:

• Product type:    4 channel 433MHz RF receiver + transmitter module kit
• Models: RX480-E4 receiver, TX118SA-4 transmitter
• Operating frequency: 433MHz (433.92MHz)
• Encoding: EV1527 learning code; the receiver learns EV1527 coded remotes and transmitters
• Receiver outputs: D0-D3, 4 channel CMOS level signal matching the A, B, C, D buttons of the remote
• VT output: output that becomes active when a valid signal is received
• Operating modes: momentary (while pressed), self-locking (toggle), interlocking (one turns on, the other turns off)
• Receiver operating voltage: DC 3.3V to 5V
• Receiver quiescent current: 5mA or less
• Receiver type and sensitivity: superheterodyne, -108dBm
• Receiver operating temperature: -25°C to 75°C
• Transmitter operating voltage: DC 3V-24V
• Transmitter inputs: K1-K4; sends the A-D key code when shorted to ground
• Transmitter modulation: ASK
• Transmitter power: 11dBm
• Transmitter transmit current: 10mA; standby current less than 3µA
• Transmitter identity: every module has a unique ID address code; the K1-K4 key codes are the same on all modules
• Learning button and indicator LED: on the receiver
• Dimensions: receiver about 28 x 12mm, transmitter about 18 x 18mm

Usage information:

• Receiver pins: GND ground, +V DC 3.3V to 5V input, D0-D3 data outputs, VT valid signal output. Transmitter pins: - negative supply, + positive supply (DC 3V-24V), K1-K4 key inputs, ANT antenna.
• Clearing the stored codes: press the learning button 8 times. The LED on the receiver flashes 7 times.
• Learning a code: press the learning button once (momentary mode), twice (self-locking mode) or three times (interlocking mode). The LED lights up and learning mode opens; press any button of the transmitter or remote. When the LED flashes 3 times, learning is complete.
• More transmitters with different IDs can be stored additionally by repeating the code learning step; different modes can be used together.

Application areas:

•  Garage door and garden gate remote control
•  Shutter, roller shutter and motorized curtain control
•  Remote controlled socket and relay control
•  LED and lighting control
•  Alarm and home security systems
•  Motorcycle and vehicle anti-theft setups
•  Remote controlled toy car and robot projects
•  Home automation and smart home projects
•  Wireless button projects with Arduino and microcontrollers
•  Remote controlled MP3 players and sound systems
   

Points to consider:

•  The receiver module learns only EV1527 coded transmitters and remotes; it may not work with fixed code or rolling code remotes.
•  The receiver supply voltage is DC 3.3V to 5V; do not power the receiver with 12V. 12V and 24V are suitable only for the transmitter.
•  The D0-D3 outputs are at signal level and cannot drive a relay or motor directly. Use a transistor or relay driver board for loads.
•  When the receiver is powered with 5V, the D0-D3 and VT outputs give 5V. For boards with 3.3V inputs such as ESP32, STM32 or Raspberry Pi, power the receiver with 3.3V or put a voltage divider on the output.
•  Range depends on the antenna, supply voltage and environment (walls, metal). For best results attach the antennas in the package to the antenna (ANT) connection of the receiver and transmitter, and keep them upright and away from metal surfaces.

Package contents:

•  1 Pcs TX118SA-4 Transmitter Module
•  1 Pcs RX480-E4 Receiver Module
•  2 Pcs Antenna
•  Note: Remote control, battery and relay board are not included in the package.