What you will receive: 2x universal remote control (compatible with 433.92 MHz door openers), equipped with a lobster clasp, which can be hung around clothes, pants, bags, etc., for easy carrying; the quantity is enough to meet your replacement needs Duplication methods: after clearing the old codes, you need to place the universal remote control to open and the old remote control side by side, and press the A button, then press the corresponding button of the old remote control to copy, the LED indicators flash about 3 times before you can let go, and other keys accordingly Widely used: these remote controls can be used to open, close and stop gates, practical and convenient, which are suitable for roller shutter doors, rolling gates, telescopic doors, garage doors, road gates, etc. Color: Black Sold quantity: 2 pieces Product specification 54.5*33.8*12.4mm Working frequency: 433 MHZ Connection control distance: 50-100 m (in an open environment, the sensitivity of the receiving