1Features low power consumption, the standby current is less than 30mA. 2Luminous keyboard, convenient to use at dark night. 3Large user capacity, this access controller supports 2,000 users. 4There are card, password, card + password 3 ways to open the door. 5Independent password design, you can use a password that is not related to the card to open the door. 6Allows the users to change the door password, ensures home security. 7Fast search speed, and the unlocking time while charging is less than 0.1s. 8With output short circuit protection, the electric lock or alarm output circuit automatically closes the output within 100S. 9With wiegand output interface, Wiegand26 card number, provides professional peroformance. 10If the card is lost, you can use the keyboard to delete the card, eliminate security trouble completely. 11Built-in alarm buzzer, prevent illegal dismantling, effectively ensure security. 12The keys are isolated from the circuit, which is outside of doorbell.Condition: 100% Brand New Item Type: Access Controller Material: Metal Color: As picture shown Operating Voltage: AC&DC9-28V Static Current: 30mA Reading Range: Approx. 3 - 8cm/1.2-3.1in Capacity: 2000 Users Ambient Temperature: -25C-60C Ambient Humidity: 10% - 90% Lock Output: 3A Alarm Output: 20A Output Short Circuit Protection Time: 100S Open Time: 0 - 99 Seconds (Adjustable) 1 x Access Controller1 x Mounting Accessory Pack1 x Instruction