Adopt innovative energy harvesting technology, no batteries no external power required, press switch to produce electricity. Kinetic self-powered switch can place wherever without running wires. (Need works with remote receiver to control lights on/off, remote receiver sold separately) Add or relocate a switch to your lights without pulling wire to the switch location, make installation quick and save labor and material costs. Easy remodel lights controls for pull-chain light fixture, ceiling lights, old house, or anywhere you want to add a switch Create multi-location (2-way or 3-way) switching applications, control your house lighting from multi location. Such as 2-way switch for staircase, basement, garage, outdoor, attic, hallway, loft, kitchen lighting Kinetic switch no batteries or external power connecting, no electric leakage or shock problem. Kids touching is very safe and good for damp environments application, such as outdoor, kitchen, bathroom, etc Encrypted wireless signal, no signal interference, secure connections. You can have a switch control multiple lights or multiple switches control a light. Outdoor up to 260 ft transmission distance, 100 ft for indoor use. Note: This switch must SYNC to Acegoo Receiver to control the lights / loads. Tips: The green mark on the switch is not a indicator/apparent light, it just means that it is the upper part of the switch, Weight: 0.125 Pounds, Manufacturer: acegoo