5V 20A Single Channel Relay Module Switch Controller for RC Models

A: One-way (5V power supply) Features of one-way type: 1-channel servo signal input, controls a one-way electronic switch. Maximum current rating: 20A. Compatible only with 5V receivers; using higher voltages may damage the module. If the receiver or servo operates at higher voltage, a voltage regulator must be used before connecting to this module. PWM frequency: 50 Hz. PWM cycle: 20 ms. Logic high: Signal pulse width > 1700 µs (ON), < 1300 µs (OFF). Dimensions: 41 × 16 × 14 mm. Cable length: Approx. 30 cm. Weight: Approx. 13 g. Compatible with RC model airplanes, cars, and boats. One-way type operation: 1. Connection: Plug the signal input cable into an unused receiver channel linked to a transmitter switch. The power LED illuminates when powered by the receiver. The work LED lights up when the assigned channel is active. 2. Status indication: Power LED shows power status; work LED indicates relay activation. 3. Activation: Toggle the transmitter switch from OFF to ON — green LED turns on and relay engages. B: Two-way (5V power supply) Features of two-way type: 1-channel servo signal input, controls a two-way electronic switch. Compatible only with 5V receivers; using higher voltages may damage the module. If the receiver or servo operates at higher voltage, a voltage regulator must be used before connecting to this module. PWM frequency: 50 Hz. PWM cycle: 20 ms. Logic levels: Pulse width > 1700 µs activates Channel 1; < 1300 µs activates Channel 2; 1300–1700 µs deactivates both channels. Dimensions: 41 × 25 × 14 mm. Cable length: Approx. 30 cm. Weight: Approx. 20 g. Compatible with RC model airplanes, cars, and boats. Two-way type operation: 1. Connection: Plug the signal input cable into an unused receiver channel linked to a transmitter switch. The power LED illuminates when powered by the receiver. The work LED lights up when the assigned channel is active. 2. Status indication: POWER LED indicates power status.