1.It serves mainly for floor control. Reader is installed to identify users' identity before gaining access to any floors of the building. 2.18 sets control point of floor include one set of alarm output. When reader is tampered with force 3.20 LED indicator lights, power light (red ), alarm light (yellow ), floor light (green). These functions indicate operating conditions. 4.18 sets control point of floor include one set of alarm output. When reader is tampered with force, alarm will be activated. 5.When gaining access, users should select which floor to reach within seconds or access will be void or invalid. 6.Any emergencies occurred or the reader is out of order which could not identify users' access identity, user could turn on emergency switch to activate all access to all floors for temporary. When reader is fixed, access control will be activated after turning off the emergency switch. 7.Power supply: DC12V. Operating temperature: 0 60oC Humidity: 80%Rh max. 8.Dimensions: 210mm (L) x 145mm(W) x 50mm(H). 9.Elevator Controller