Feature: 1. Metal integrated access control machine, support contactless card sensing, advanced single door controller. 2. Three door opening methods, card, independent password, card+password, large user capacity, support up to 2000 users. 3. Support password modification by users, you can delete the card number after the card is lost, effectively eliminating potential security risks. 4. Using unique metal material design, built‑in American for Atmel microprocessor, has strong anti‑interference ability. 5. Built‑in card reader supports 125KHZ EM card, supports for Wiegand 26 input/output. 6. Adopts backlit keyboard, the key letters can be clearly seen at night without turning on the lights, convenient to use. 7. With doorbell interface, wired doorbell can be connected, anti‑disassembly alarm function, the alarm will sound after illegal disassembly, high safety and reliability. 8. Output short-circuit protection, when the electric lock or alarm output is short-circuited, the output will be automatically turned off within 100 microseconds 9. Powerful and easy to use, it can be widely used in high-end office buildings, residential quarters and other public places. Specification: Condition: 100% Brand New Item Type: Keypad Access Control Material: Metal Color: Black+SilverFrequency: 125khz Storage Capacity: 2000 Users Working Voltage: 12-24V DC Working Current: <200mA Quiescent Current: <30mA Support Card: ID Card Card Reading Distance: Approx. 2-6CM/0.8-2.4in Relative Humidity: 10%-90% Working Temperature: -20°C-+60°C Storage Temperature: -20°C-+60°C Output Short Circuit Protection Time: Less Than 100us Electric Lock Output: ≤3A Door Opening Delay Time: 0-99 Seconds (Adjustable) Size: Approx. 118 x 80 x 23mm/4.7 x 3.1 x 0.9in. Package List: 1 x RFID Access Control Machine1 x Connecting Cable1 x Installation Accessories Pack1 x Instruction