1. Can copy 280-868MHZ learning code, fixed code and some rolling code remote control2. It can copy dozens of brand remote controls such as , came, , etc.3. The buttons of the remote control are from South Korea, which can be used for millions of times, and the number of times is up to ten times that of domestic buttons.4. The frequency of the crystal oscillator is 75kHz, and that of others is 300kHz.5. The PCB board used is an international glass fiber double-sided panel (the cost of double-sided panels is higher than that of single-sided panels), which has reached international standards, with high density, high temperature resistance, and no deformation.Working voltage:3VWorking current:less than equal 12mAWorking frequency:280-868MHZTransmission power:10-15mwLaunching distance:80 meters (open space)Transmission rate:50-60KHZDuplicate has the function of duplicating the remote control and can be used aloneNumber of keys:four keysScope of application:wireless remote control is widely used in various door and window controlColour:BlueMaterial:PlasticPackage Contents:1 * remote control switchOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.