Features: 1.Only support 5V voltage receiver, otherwise it may cause module damage. If the receiver and servo use high-voltage system, please add a way to the module voltage reduction module 2.1 way servo signal input, control all the way electronic switch, normally open end support 20A current. 3. The product has a power-on protection function, easy to operate, the input channel does not need to be calibrated, compatible with all brands of remote control 4. Using high quality materials, open design, easy to dissipate heat. Parameter: Low voltage version: The working voltage is 3.3V-5.2V, so the receiver voltage is 3.3V-5.2V, it is recommended not to exceed 5.2V, otherwise it will be burned. High voltage version: the working voltage is 5.2V-12V, suitable for most receivers Function Description: Instructions for use: 1.Connection Plug the signal input cable into an idle receiver channel that corresponds to one of the switches on the remote control. When connected to the receiver, the power indicator will be lit. The working indicator lights up when the switch channel is open and the opposite is closed. 2.Working Mode The red LED indicates the power indicator; the blue LED indicates the relay working status. 3. Trigger the switch on the remote control (OFF-ON), the green LED lights up and the relay starts to work. Frequently Asked Questions: 1: Is the switch with output? A: No output, just a single-pole double-throw switch, the device is another power supply, power supply is how many V output is how many V. 2: What is the difference between electronic switch and relay? A: The same is a switch, relay current support for more (maximum support 20A) relay AC or DC can be, the electronic switch can only be connected to DC power 3: Is the switch controlled by PWM duty cycle? 4: What is the signal of this startup? How big is the frame rate? A: air model pwm signal: 1ms to 1.3ms for state A, 1.7ms to 2ms for state B, A switch to B for open, B switch to A for close. Normally open and normally closed, the receiver sends a signal, normally open and normally closed. 5: Why the switch has been red light, blue light is not? A: PWM signal terminal problem, confirm that the PWM output (can take the servo tester tester) to see the amount of travel is large enough, (the amount of travel adjusted to the maximum and try again) 6: can control the motor forward and reverse? A: No, can only control on or off 7: can control multiple? A: The switch is currently only one way, a channel can only control all the way to start and stop the relay. 9: What is the maximum limit of the relay? A: Relay voltage and current limit: 20A 24V DC, 20A 125V AC 10: Is the relay point-activated or self-locking? Package include: Aviation model switch *1