Keszoox
433 Mhz Superheterodyne RF Receiver And Transmitter Module Remote Control WL102-341 Receiving Transmitter Module Electric Parts
433 Mhz Superheterodyne RF Receiver And Transmitter Module Remote Control WL102-341 Receiving Transmitter Module Electric Parts
Couldn't load pickup availability
433MHz Superheterodyne RF Receiver & Transmitter Module — WL102-341, Remote Control, Arduino
A matched pair of 433MHz superheterodyne RF receiver (WL102) and transmitter (341) modules for wireless data transmission in Arduino, ESP32, and microcontroller-based remote control and sensor projects. The superheterodyne receiver architecture provides significantly better sensitivity and noise rejection than simpler superregenerative receivers, enabling reliable communication at longer range and in environments with RF interference. Compatible with standard 433MHz ASK/OOK encoding used by most RF remote control libraries.
Technical Specifications
| Parameter | Receiver (WL102) | Transmitter (341) |
|---|---|---|
| Frequency | 433.92MHz | 433.92MHz |
| Architecture | Superheterodyne | ASK/OOK |
| Supply Voltage | 5V DC | 3–12V DC |
| Sensitivity | −110dBm (typ.) | — |
| Output Power | — | Up to +10dBm (12V) |
| Data Rate | Up to 4.8kbps | Up to 4.8kbps |
| Modulation | ASK / OOK | ASK / OOK |
| Range | Up to 100m open space (antenna dependent) | |
| Antenna | External wire antenna (17.3cm for 433MHz) | External wire antenna |
| Interface | Digital DATA pin | Digital DATA pin |
| Certification | CE, RoHS | |
Typical Applications
- Arduino Remote Control: Build a wireless remote control system for robots, RC cars, and home automation using the RCSwitch or RadioHead Arduino library
- Wireless Sensor Network: Transmit temperature, humidity, and sensor data wirelessly from remote sensor nodes to a central Arduino receiver
- Home Automation: Control 433MHz mains relay modules, smart plugs, and RF-controlled power strips from an Arduino or ESP32 home automation controller
- Garage Door & Gate Control: Decode existing 433MHz garage door remote signals and replicate them with Arduino for smart home integration
- Weather Station: Receive data from 433MHz wireless weather sensors (temperature, rain gauge, wind speed) and log to Arduino or Raspberry Pi
- IoT Sensor Gateway: Build a 433MHz-to-WiFi gateway using ESP8266/ESP32 + this receiver to bridge legacy 433MHz sensors to MQTT/Home Assistant
Arduino Wiring
- Receiver: VCC → 5V | GND → GND | DATA → Arduino D2 (interrupt pin)
- Transmitter: VCC → 5V (or 12V for max range) | GND → GND | DATA → Arduino D10
- Attach a 17.3cm wire antenna to the ANT pad on both modules for maximum range
- Use
RCSwitchlibrary:mySwitch.enableReceive(0);for receiver,mySwitch.send(code, 24);for transmitter
FAQ
Q: What is the difference between superheterodyne and superregenerative receivers?
A: Superheterodyne receivers (like the WL102) use a local oscillator and mixer to convert the RF signal to a fixed intermediate frequency before demodulation, providing much better selectivity and sensitivity (−110dBm vs −90dBm). Superregenerative receivers are cheaper but more susceptible to interference and have shorter effective range.
Q: Can I use this to control 433MHz mains relay modules?
A: Yes. Use the transmitter with the RCSwitch library to send the learned code of your 433MHz relay module. First sniff the code using the receiver + RCSwitch ReceiveDemo sketch.
Package Contents
- 1 × WL102 433MHz superheterodyne receiver module
- 1 × 341 433MHz transmitter module
