Brand SimpliSafe Color White Power Source AC Power with Battery Backup Compatible Devices SimpliSafe Home Security System Item dimensions L x W x H 7.67 x 2.75 x 1.27 inches About this item Your door is always secure - Locks when you arm your system or automatically when you set a timer. Instant phone alerts and app control - Keep track of who's coming and going with alerts in the SimpliSafe App any time your door is locked or unlocked. No key needed - Use the included PIN Pad, your phone or the SimpliSafe Key Fob (sold separately) to unlock the door. Impede intruders - If the wrong PIN is entered five times, the Smart Lock will notify you. Reliable connectivity - Stays connected to your SimpliSafe system and wireless network so your door is always protected.