Rated voltage: 3V(CR2032) Installation: wireless Learning frequency range: 287MHz,300MHz ,310MHz ,315MHz, 315.5MHz ,330MHz, 360MHz ,390MHz, 410MHz, 433.42MHz,433.92MHz, 434.42MHz,868.35MHz,280-868MHz. Radio transmission distance: 30-100m (Open area) Scope of application: garage door, alarm, automatic door, rolling door, etc. Fashionable,Simple and elegant. 1 remote control can control up to 4 different of remote controls. Clone 4 identical frequencies at the same time. Clone 4 different at the same time. Easy to replace the battery. The battery is 1 piece CR2032. More have been added. It is compatible with more . Uses: garage doors, Gate Doors, motorcycles, car alarm products, home security products, short-range wireless remote control products, industrial control products, Alarm Systems etc. Colour:grey Material:ABS Package Contents: 1 x Remote Control Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.