Invis. Mifare1 Lock "Mini" W/100mm Antenna, 61x61x22mm, Black ABS Body, W/Light Grey Card Reader Knob (No Logo), 1xCR123A Batt. Lithium To Be Bought Separately, Can be Programed to Public, Private or Office Mode W/Non Locking & Low Battery Alarm, Striker & Protection Cover to be Bought Separately