Device interface: Bluetooth Keyboard number of keys: 11 Material: Plastic Power source type: Battery Alkaline Black Compatible with Yale Unity SeriesWith the Yale Smart Keypad you can lock and unlock your door via PIN codes.Control AccessCreate and send guests unique entry codes with the Yale Access app.220 PIN codesEnter up to 220 user PIN codesOne touch lockingSave time and lock your door with just a touch.Hassel free installation. No hard wiringInstalls on your door in just a few minutes. 100% battery-powered, no wiring needed. Features Bluetooth version 4.2 Keyboard number of keys 11 USB hub No Pointing device No Device interface Bluetooth Design Product colour Black Material Plastic Power Number of batteries supported 2 Battery type AAA Battery technology Alkaline Power source type Battery Weight & dimensions Height 73.6 mm Depth 25 mm Width 25 mm Operational conditions Operating relative humidity (H-H) 0 - 90% Operating temperature (T-T) -17 - 50 °C leaflet