Notice: 1. Copying the remote control can only copy the remote control with the same frequency. Please understand the frequency of the copied remote control before purchasing. 2. This remote control cannot copy computer code and rolling code, the device can only copy fixed code Specification: Transmission frequency: 433MHZ Channel: 4 Model Number: 433 Mhz Duplicate Remote Control Wireless Communication: RF Encoder type: Fixed encoding. learn to code Color: ABCD key/switch lock key / up and down keys Function: copy remote control/test remote control/copy remote control Working current: 10mA Radiated power: 10mw Packaging: opp Size: 5.4×2.9×1.4(cm) Weight: 28 grams Transmission distance: 50-100M (open area, the sensitivity of the receiving device is negative 100dbm) Scope of application: The remote control is widely used, mainly used for remote control of electric retractable doors, elevators, remote control gates, remote control rolling shutter doors, garage doors, sliding doors, remote control LED lights, remote control fireworks igniters, remote control passenger doors, anti-theft alarms, electric door alarms device, MP3 motorcycle anti-theft alarm, etc. Copy method: 1. Clean Code : Press the A key and the B key at the same time (some cases have the Lock key and the unlock key), after the LED indicator flashes 3 times, release one of the keys, hold the other key at the same time, and then press the released key three times, the LED indicator flashes rapidly. At this point, all the memory data is cleared, and no matter which button is pressed on the remote control after cleaning, the LED indicator will not light up. 2. Copy Code: Hold the original remote control in one hand and the copy remote control in the other hand. The two remote controls should be placed as close as possible (ideally, the two remote controls should be placed side by side on the table with zero distance), and the copy button should be pressed. , when the LED indicator flashes three times, it means that the copy is successful, and the operation methods of other keys are the same as above. Some remote controls have low transmission power, so you should put the original remote control back on the duplicate remote control for operation. There is noise, and interference should be avoided during operation. If the copy is unsuccessful, the code should be cleared and then copied again. Note: 1. Before using our self-copying remote control to copy, please be sure to clear the existing code of the self-copying remote control. 2. The unlock operation also clears the original copied data. Package includes: 1/2/3/4/5/10PCS 433MHz remote control(with Keychain ) 1x Manual