... The product is Contact-less inductive card Metal Password Access Controller,According to the model, respectively support EM, HID, ... It is one of the most advanced stand alone access controller. It uses unique metal exterior design,Dexterity keyboard panel ... 28V Static Current:≤30mAReading Range:3~8cmCapacity: 2000 usersAmbient Temperature:-25°C~60°CAmbient Humidity:10%~90%Electricity lock output ...