2 PCS Electric Roller Shutter Waterproof Copy Universal Remote Controller Garage Door Remote Control Key 1. Material: ABS 2. Size: about 6x3.5x1.5 cmpiece 3. Frequency: 433315430418390350330310MHz 4. Working voltage: 5V 5. Remote control distance: within 50 meters 6. Applicable chips: all fixed code chips 7. Power supply: contains a 23A 12V lithium battery 8. Scope of application: all kinds of rolling doors, retractable doors, garage doors, barriers, etc. Features: 1. CD craft button, one-button switch, simple and convenient 2. Copy type, one-click copy 3. ABS metal inner frame, compressive and wear-resistant, waterproof and rainproof 4. Transmitting chip, stable signal, strong penetrability, about 50m remote control distance, easy to use 5. Intelligent indicator light display, sliding shell with resistance, durable keys 6. Streamlined design, comfortable to touch, with keychain, convenient to carry and safe to use How to choose the remote control: 1. Make sure there is a remote control that can be used normally 2. Check whether there is learning code, copy, copy, dial code, etc. on the back, or if it has been copied. If yes, select the corresponding frequency directly. If you dont have it, disassemble the remote control to see the frequency and chip model 3. Look at the frequency first, then the model, the chip model supports selection by frequency Remote control copy steps 1. New remote control code clearing: press and hold the door open button and close button of the new remote control at the same time for about three seconds, the new remote control indicator flashes quickly to complete the code clearing (note: the old remote control does not need to clear the code operation) 2. One-click copysingle-key copy -One-key copy: the old remote control is on the left, the new remote control is on the right, the two remote controls are close together, and press the pause button at the same time to keep it, until the red light of the new remote control flashes, the one-click copy is c