Rugged and elegant design Support Fingerprint /125KHz RFID card / Password Less than 1 second user recognition Reliable and highly accurate ZK optical sensor Integrated 125KHz RFID proximity reader sensor Supports Fingerprint and 125 KHz RFID card and Password identify 26-digit Wiegand interface for 3rd party control panels Stores 500 fingerprint templates Audio-Visual indications for acceptance/rejection of valid/ invalid RFID Card This is 125KHz RFID Proximity Card. It can work with the product which has RFID card reader, when you put it on the RFID reader, the access controller will unlock the lock. Operation Frequency: 125KHz Detecting distance: 2-10cm Size:55mm x 86mm x 0.8mm Each card pre-programmed with an uniqe ID, which is printed on it. Specifications: Panel Material: Hard Plastic Fireproof Material Opening Device: Normal Open Max Power Rating: 10A/250V Mechanical Life: 500000 tested Panel Material: Hard Plastic Dimensions: 86mm(L)*86mm(W) Operating Temperature: 10~+55°C(14-131℉) Operating Humidity: 0-95% (non-condensing) Weight: Approx. 66g