Feature:1. LONG DISTANCE LEARNING: The remote control is a wireless remote control with a 433MHz push cover to remotely control a learning code wall switch, plug holder, or expansion socket2. POWERFUL FUNCTION: This is a radio frequency remote control Suitable for long distance, multi switch control3. WIDELY USED: Suitable for remote control switch, prevent theft alarm, remote control door lock, remote control electric rolling shutter doors and window, wireless remote control garage door, wireless remote control rolling gate, wireless remote control road gate, etc.4. PRODUCT MATERIAL: Plastic material has strong corrosion resistance, durable, waterproof, light weight, and a good insulator, come with metal ABCD key5. TECHNICAL PARAMETERS: Equipped with 27A, 30mA battery, working voltage for DC12V, working frequency is 433MHz, coding chip is EV1527(learning code)Specification:Item Type: 433MHZ RF Remote ControlProduct Material: PlasticProduct Specifications: Metal type(ABCD button)Product Size: Approx. 54.5 x 29.5 x 13.8mm / 2.15 x 1.16 x 0.54inBattery: 27A, 30mAOperating Frequency: 433MHzEncoding Chip: EV1527(learning code)Weight: 30 g / 1.1 oz(approx.).Package List:1 x Remote Control1 x 27A Battery