433MHz RF Radio Module Set RX470-4 / WL102-341

This set of the WL102-341 transmitter and the RX470-4 receiver builds a simple radio link on 433.92 MHz, for example to send readings from a sensor to a main station. The two spiral antennas are soldered to the modules.

Important: According to the manufacturer QIACHIP, the WL102-341 transmitter is designed for 2.0 to 3.6 V DC. The RX470-4 receiver runs on 2.0 to 5.0 V DC.

Features:

• WL102-341 transmitter with the pins EN, DAT, + and −
• RX470-4 receiver with VCC, DATA and GND
• Antennas: QIACHIP specifies a coil with 15 turns and 5 mm diameter for the transmitter and a coil with 26 turns and 3 mm diameter for the receiver
• Control for example with the Arduino library rc-switch

Application Examples:

• Transmitting sensor readings wirelessly
• Simple radio remote control
• Switching 433 MHz radio sockets if their protocol is supported

Documentation:

• WL102-341 transmitter, datasheet (QIACHIP)
• RX470-4 receiver, datasheet (QIACHIP)
• rc-switch library for Arduino (GitHub)

Technical Data:

• Manufacturer: QIACHIP
• Frequency: 433.92 MHz
• Transmitter: WL102-341
• Transmitter operating voltage: 2.0 to 3.6 V DC
• Transmitter standby current: below 0.1 µA
• Transmitter data rate: up to 20 kbit/s
• Transmitter power: up to 11 dBm
• Transmitter board: 17.5 × 13.3 mm
• Receiver: RX470-4
• Receiver operating voltage: 2.0 to 5.0 V DC
• Receiver current consumption: 3.3 mA
• Receiver sensitivity: -108 dBm
• Receiver bandwidth: 300 kHz
• Receiver transfer rate: 2 to 10 kHz
• Receiver board: 30 × 9.5 mm
• Operating temperature: -40 °C to 85 °C

Scope of Delivery:

• 1× receiver RX470-4
• 1× transmitter WL102-341
• 2× spiral antenna