XY-MK-5V RF Transmitter Receiver Module 433MHz Wireless Link Kit

Description

This 433MHz RF link kit consists of a matched transmitter and receiver pair designed for straightforward wireless serial communication between microcontrollers. The system employs Amplitude Modulation (AM) at a data rate of 4 KB/s, suitable for transmitting sensor readings, remote control signals, or telemetry data. The receiver module operates at a stable 5V supply with low standby current, making it ideal for battery-powered nodes, while the transmitter’s flexible voltage input accommodates various power sources.

The link is optimized for one-way communication, requiring a second pair on a different frequency for full duplex operation. An external wire antenna can be attached to the transmitter to extend the operational range, which varies from 20 to 200 meters depending on environmental conditions and supply voltage. This kit is a fundamental building block for DIY IoT projects, remote controls, and simple wireless sensor networks.