Rain Sensor Features: 1.Rain sensor will activate the wiper then rain.According to the amount of raindrop,it will adjust the wiper speed automatically as intermittent/slow/fast 2.The switch of the rain sensor will take the place of the orginal interittent controller,and the slow and fast speed mode function is still reserved Light Sensor Features: 1.Light sensor will be activated at dusk or the car gets into the poor light spots like tunnel and garage,the system will activate the motormeter light and dipped headlight 2.The Light sensor switch is jointed with the headlight switch.When you star the car,you can cancel the automatic hadlight mode by light control handle,so you will be to operate the headlight manually.If you restart the car,the automatic headlight mode will be activated again 3.In order to reserve the power to the engine,the sensor system will delay turning on headlight by 5 seconds when starting the engine at night Supply Voltage DC10V -16V Operating Current Less than 200 mA Operating Temperature -20 degree -85 degree Relay Current 20A Wiper response Time 0.1 second Detection Sensitivity 0.005 milliliters(Water) Colour:black Material:ABS Package Contents: 1set x Rain & Light Sensor Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.