Wireless Kinetic 1 Gang Switch (Silver finish), PRO SERIES, Installation-Easy, Battery-Free Wall On/Off Switch Outdoor Waterproof IP67 Wireless Kinetic Switch Receiver for Lamp Electric Appliance Features: Self-supply and dimmable: The dimmer switch requires no batteries and no power connection. The energy is built up kinetically by pressing the switch. Small structure and that is dimmable.Through long press to circularly dim the brightness to suit any activity. Turn on the light again, and it maintains the last light intensity. With this ENER-J light switch, you don't need to pay the extra money to buy a dimmer. Can be used 2/3 Way. Multiple Switches can control one receiver and vice versa thereby elimanting the need to do 2 way rewiring Range and Usage: The effective range between transmitter and receiver (not included in the package) is approximately 30 meters indoors and approximately 100 meters outdoors. ENER-J receiver (not included in the package) can connect to multiple ENER-J switches. Ideal to control your garden house, outdoor lighting from the comfort of the house! Never route power cables, ready for use: No slots knocking, no junction box required. Wireless use without drilling and screws. Can be mounted with adhesive tape or simply screwed on. Ready for use within a few minutes. The radio switch allows you to mount in all places. For example, Glue in glass, marble, wood, metal surface or traditional with screw Long life and warranty: Ultra-low-power design. Useful life up to 50 years and up to 200,000 keystrokes. Comes with 3 years warranty