The MTSKR1905WF remote has one 30V 3A Relay mechanical switch and one 20V 2A transistor electronics switch to control Esk8 Light and Esurf Water Pump, etc. .
Suggest to use Relay Switch to control Water Pump, Transistor Switch to control Light.
1. Relay Switch：
-When relay switch is in original position(no display of ① in Main interface) , COM(common point) and CLO(normally close) are connected.
-When Short press Function button 2 times (display of ① in Main interface) , COM(common point) and OPE(normally open) are connected. Short press Function Button 2 times, relay switch is off.
2. Transistor Switch：
Short press Function button 3 times , ② will display on main interface, transistor switch source will be connected to GND and turn on LED.
Short press Function button 3 times, ② will disapper on main interface, LED is off.