30A controller.can be used in many Remote Has keychains easy to hold color: Black controller Input power AC 90-250V Frequency 433MHz Remote storage 25pcs Size 2.6 x 2.3 x 1.2 in Weight 0.15 lb Max Current 30A Shell Yes Port L Feature with protection terminal Remote transmitter Size 2.36 x 1.18 in(without keychain) Frequency 433MHz Battery 2 x cr2016(include) Control Distance 50m in open sapce Material: Plastic Weight 0.07 lb Working Voltage 3V Feature has Keychain Package Contents: 2 x Remote Control 1 x RF controller Only the above package content, other products are not included. Note: Light 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.