ZKTeco KR500HA HID Compatible 125kHz Proximity ID Card Reader
KR503H
Due to its conveniently small mullion size, KR503H is the ideal card access solution for any metal doors with thin frames, parking gates, fences, turnstiles or any security device having a narrow mounting surface. For the highest level of security KR503H has a built-in Wiegand-Out port which can be connected to most any access control panel (including ZKAccess C3 and InBio door controllers).