IONIZE RL421 Slim Silent Electronic Light Switch Relay 230V, controllable associated with a button, recessed installation

3-wire connection: Phase, Load, Button on Neutral (NOT ON PHASE). If you have any doubts about connecting the item to the electrical system, contact the seller SAY GOODBYE TO COMPLEX WIRING: Eliminate the need for expensive 3-core cables and intermediate switches. The RL421 allows you to control one light from unlimited points using simple parallel wiring. SILENT ELECTRONIC SWITCHING: Unlike noisy mechanical "clunking" relays, our electronic pulse technology is silent, making it perfect for bedrooms, nurseries, and quiet hallways. ULTRA-SLIM FOR UK HOMES: Specifically engineered to fit behind a standard decorative faceplate in a 25mm or 35mm UK back box. No need for messy wall chasing or bulky enclosures. Self-consumption: none Responsive even to short button presses