The 3-Series 4-Button Key Fob can be personalized to arm security systems, illuminate scenes, and trigger events in your connected home system. Less than two inches wide, the 4-Button Key Fob can be attached to a key ring and transported around with ease. The 4-Button Key Fob fully supports ZigBee HA 1.2, giving it a wide range of compatible platforms and unlimited options for connected home control.