- 433 MHz RF wireless switch, no wiring needed between lights and switch - Remote control up to 50 meters, signal passes through walls, floors, and doors - Easy installation: mini receiver (47x42x23 mm) hides in electrical or junction boxes - Supports up to 10 switches per receiver and one transmitter can control multiple receivers - High-quality relay, supports over 400,000 uses and up to 10A (1500W) - Standard 86 switch, easy to fix with adhesive tape or screws - Replaceable battery (12V 27A), approximate lifespan of 5 years - EV1527 learning code technology for greater security and stability - Extendable antenna on the receiver for better signal reception - Expandable and flexible: allows adding additional wireless switches - Versatile use: controls lamps, lighting, fans, outlets, and more in homes, offices, factories, laboratories, and supermarkets