PWM Relaisschalter Fernbedienung Universalschalter für Mini Flugzeug RC Auto Boot
Here PWM is the servo signal, can turn the servo, you can use this device. Relay coil power consumption of about 140mW. 1x Relay Switch. White Relay Size: 10x6.5x5.4 (mm). The model should be used on the small relay.