Feature: 1. Low power consumption, standby current is less than 30mA. 2. Luminous keyboard, convenient to use at dark night. 3. Large user capacity, this access controller supports 2,000 users. 4. Metal panel, IP65 waterproof, corrosion resistant for long term using. 5. Independent password design, you can use a password that is not related to the card to open the door. 6. The user can change the door password, safer and dependable to use. 7. Fast search speed, and the unlocking time while charging is less than 0.1s. 8. With output short circuit protection, the electric lock or alarm output circuit automatically closes the output within 100μS. 9. With wiegand output interface, wiegand26 card number, provides professional peroformance. 10. If the card is lost, you can use the keyboard to delete the card, eliminate security trouble completely. 11. Built-in alarm buzzer, prevent illegal dismantling, effectively ensure security. 12. The keys are isolated from the circuit, which is outside of doorbell. Specification: Condition: 100% Brand New Item Type: Access Controller Material: Metal Color: As picture shown Operating Voltage: DC12V Static Current: ≤30mA Reading Range: Approx. 3 - 6cm/1.2-2.4in Capacity: 2000 Users Ambient Temperature: -35℃ - 60℃ Ambient Humidity: 10% - 90% Lock Output: ≤3A Alarm Output: ≤20A Output Short Circuit Protection Time: ≤100μS Open Time: 0 - 99 Seconds (Adjustable). Package List: 1 x Access Controller1 x Mounting Accessory Package1 x Instruction