Product parameters: (switch positive pole! Low 1.5ms is off, higher than 1.5ms is on) There are work lights! Slow flashing LED indicates no output, and long flashing LED indicates output! Working voltage: 3.0V --- 30V (high voltage version) Output current: 20A (high voltage version) Weight: 5 g (high pressure version)/pcs The switch is controlled by a 2-stage switch on the remote control!! Material:Composite Material Tool Supplies:Assembly Category RC Parts & Accs:Servo Accessories Use:Vehicles & Remote Control Toys Technical parameters:Value 2 Remote Control Peripherals/Devices:Receivers For Vehicle Type:Cars Four-wheel Drive :Assemblage Wheelbase:Screws color:As shown Material:composite material Package Contents: 4 x Remote Control Electronic Switch Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.