【Wireless Remote Control, Stable Through-Wall Performance】Via the wireless light switch, remotely control lighting fixtures or any electrical appliance connected to a relay receiver. Utilising high-performance radio frequency signal transmission, it delivers stable and reliable performance with high reception sensitivity. The robust signal effectively penetrates walls, floors and doors, enabling unobstructed indoor control up to 20 metres. 【Simple Installation, No Wiring Required】Supports mounting via double-sided adhesive tape or screws, enabling straightforward installation without professional electricians. Featuring a standard 86mm design, it directly replaces existing wall switches. The receiver's terminals require no connection to in-wall wiring; it connects directly between the power source and lighting fixture, allowing flexible expansion of your lighting system without affecting existing circuits. 【Quick Connections, Compact and Concealable】Equipped with quick-connect terminals, eliminating the need for electrical tape. Simply strip the wires and insert to lock in place, boosting installation efficiency. The receiver's compact design allows concealment within ceilings, junction boxes, or light fixture bases, maintaining a sleek and uncluttered home aesthetic. 【Multi-Device Control, Flexible Networking】A single receiver can pair with multiple wireless switches, enabling convenient control throughout the home. Supports both one-to-many (one switch controlling multiple receivers) and many-to-one (multiple switches controlling a single receiver) configurations. 【Wide Compatibility, Plug-and-Play】Compatible with CFLs, incandescent bulbs, LED lights, ceiling fans, and various appliances. Suitable for diverse settings including homes, offices, shops, garages, and gardens., Manufacturer: Koprek