Item Type: 433MHz 4-Key Learning Remote ControlMaterial: ABSWorking Voltage: DC 3VWorking Frequency: 433MHzNumber of Keys: 4Launch Distance: 30m/98.4ft (Outdoor)Working Current: 12mABuilt-in Battery: Button BatteryBuilt-in Battery Model: CR2032Built-in Battery Capacity: 210mAhPackage List1 x Remote Control1Suitable for 4channel wireless remote control of cars, car sunroofs, garage doors, gates, alarm systems, heating systems, home automation, etc. 2This 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. 3The speed of copying data is faster, it is not easy to lose codes, and the distance is far. 4Small size, low power consumption, flexible operation and convenient installation, strong wireless signals can pass through walls, floors and doors. 54channel wireless remote control, adjustable working mode, instantaneous switching and locking of switch.