Features: Perfect for remote controlling of droplight, crystal lamp, modern low-pressure lamp, absorb dome light, day flower lamp, fluorescent lamp, energy-saving lamps, exhaust fan, LED light etc. Fast and easy installation, not obstructed by walls, capable of connecting any loads. Remote controller and switch can be used simultaneously for ease and flexibility. Every set of remote controlling switch has its special code. More sets can be used in one room without interference. 315/433 MHz frequency ensure sensitive and strong signal receiving and transmission. High-quality plastic material and professional PCB circuit board, safe without noise and spark, anti-corrosion, moisture-proof and anti-vibration. Specifications: Working voltage:DC 12V~24V Quiescent Current: < 10MA Working Frequency:433Mhz,315Mhz(optional) Working temperature : -20-70 Size:Approx.79.4x61.7x28mm/3.13x2.43x1.1in Net Weight:178g Note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1Set Remote Relay