Feature: 1. The built‑in card reader supports 13.56 MHZ for Mifare card and support Wiegand 26 input/output. It can be widely used in high‑end office buildings, residential quarters and other public places. 2. Supports up to 2000 users, allows three door opening methods which includes card, password, card + password opening, euipped with doorbell interface, can be connected to a wired doorbell. 3. Support set an independent password. The user can modify the password by himself, and also can delete the card number. In case of the card is lost, completely eliminating security risks. 4. Has anti‑disassembly alarm function and output short‑circuit protection function. When the electric lock or alarm output is short‑circuited, the output can be automatically turned off within 100 microseconds. 5. Made of high‑quality metal material design, backlit keyboard, built‑in American for Atmel microprocessor, has strong anti‑interference ability, high safety and reliability. Specification: Condition: 100% Brand NewItem Type: Door Keypad Material: MetalColor: Sliver + BlackFrequency: 13.56MHz 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. 155 x 45 x 21mm/6.1 x 1.8 x 0.8in. Package List: 1 x Door Keypad 1 x Connecting Cable1 x Bag of Accessories1 x Manual