Dimensions: 120*56*18 mm DC9-28V for work voltage and ≤30mA for static current Range of Reading: 3–8 cm Capacity: 2000 users The surroundings Climate: -25°C to 60°C The surroundings 10% to 90% humidity Output of the electric lock: ≤3A Output alarm: ≤20A ≤100μS is the output short-circuit protection time. Adjustable open-door time: 0 to 99 seconds