2MP CMOS camera Mechanical button Night vision & voice indicator PoE 160° angle of view Compatible with VTH5222CH-S1 and VTNS1006A-2 Group call Power supply by 2-wire Aluminium alloy plate IK07, IP65 (Apply silica gel to gaps between the device and the wall. Liquid sodium silicate is recommended. For details, see the quick start guide.) Surface mounted and flush mounted