(Product Features) 1. All of our items are brand new 2. One to one key copy 3. Each key password alone save 4. Can continuous repetitive copy use one million times 5. Privacy is strong Multi-functional and multi-variable, personalized and user-friendly simple design and fast to use. Code cleaning methodAt the same time, press and hold the two keys of unlock and lock (some cases have two keys of up and down) and the LED indicator light will enter the state of fast flashing. At this time, all the data in the memory will be cleared. After the data is cleared, the remote control will not light up no matter which key you press.3. Copy methodOne hand keeps the original remote controller, while another keeps the copy remote control, the two remote controls should be placed as closely as possible (the ideal situation is to put the two remote controls on the desktop side by side with zero distance), respectively press down the copy button, when the LED indicator light flashes quickly after three flashes, this copy is successful, other key operating methods are the same. Some remote control has a smaller transmitting power, so the original remote control should be placed back to the copy remote control to be operated. For the presence of noise, it should avoid interference to operate, If the copy is not successful, it should recopy after clearing code. !!! ( Attention:Your original remote control must be able to work and the same as our remote control frequency) All 433.92mhz fixed code brandsThis model isn't compatible with rolling code: HCS301, HCS300, HCS101, HCS200\HCS201 etc (Product Specifications) Manufacture Country: China Encoding method : Fixed code Self-copying : Self-copying Material: Metal and PVC Product Type: Copying / Duplicating Remote Control Transmitter Key Fob RF Frequency: 433MHz Match Code Way: Copying Via Face to Face(One to One Copying) Channel Supported: Four Channel Modulation System: ASK (AM) Operating Voltage:DC12V (include battery) Operating Current:<25mA Transmitting Power: +13dbm Frequency Windage: ±0.2MHz Transmission Distance: 30m-100m (Free Space) (Package Included) 1 x Remote Controller Note: ① Due to manual measurements and slight color variations, please allow 1-3 cm (0.4-1.18 inches) difference to suit different display settings. ② Due to the light and screen difference, the item's color may be slightly different from the pictures. Please understand.