Please check the device frequency and IC chip model before purchasing. The following three conditions must be met: 1. You must have a working remote control. (Or copy the wrong command, otherwise it won't work.) 2. You must know the device frequency and IC chip model of the current remote control. 3. This remote control is mainly suitable for rolling and sliding gates, doors, road gates, etc. If your door is a reversing door, please check with our customer service before purchasing. Specifications: Working current: ≤ 18mA Working frequency: 433.92MHz Code: Fixed code or learning code Modulation mode: ASK (AM) Transmission distance: 50 – 100m (Test) Encoding type: Automatic copying Working temperature: -20°C to +50°C Features: 1. Strong confidentiality 2. One-to-one key copy 3. Each key password is saved individually 4. Continuous repeat copying can be used one million times How to program Copy your original remote control face to face Step: 1: Clear the history code from the