Feature: 1. The speed of copying data is faster, it is not easy to lose codes, and the distance is far. 2. 4‑channel wireless remote control, adjustable working mode, instantaneous switching and locking of switch. 3. Suitable for 4‑channel wireless remote control of cars, car sunroofs, garage doors, gates, alarm systems, heating systems, home automation, etc. 4. Small size, low power consumption, flexible operation and convenient installation, strong wireless signals can pass through walls, floors and doors. 5. This is an attractive and lightweight remote control, small enough to hold a key chain, so it's not bulky at all, and it's easy to carry when going out. Specification: Item Type: 4-Key Remote Control Material: ABS Code Matching Method: Copy When Connected to Another Remote Control (One-to-One Copy) Support Channel: Four Channels Coding Type: Learning Code, Fixed Code, Bearing Code Modulation System: ASK Working Current: 12mA Transmission Power: +13dBm Transmission Distance: 30m/98.4ft (Free Space) Built-in Battery: Button Battery Built-in Battery Model: CR2032 Built-in Battery Capacity: 210mAh Application: Copy and Restore Wireless Remote Controls, Such As Fences, Garage Doors, Cars/motorcycles, etc.. Package List: 1 x Remote Control