Features:* Low energy consumption.* Multi-Function buttons、 easy to operate.Specifications:Voltage: 12V (Battery Included)Working Volume: <=6mAEmission Distance: <=100m/328ftKey Description: 4 button(Disarm、 arm、 emergency、 cancel)Remote Control Size(each): Approx.3.8*6.3*2.8cm/1.50*2.48*1.10inRemote Control Weight(each): Approx.58g/2.08ozQuantity: 2pcsPackage List:2 * Remote Control