Dimensions : 120Lx76Wx27D(mm) ___________________________________________ Operating Voltage : 12VDC ___________________________________________ Input Current : Static state current 40mA Max current 130mA ___________________________________________ Card Reading Distance : ID card,125KHZ __________________________________________________ Open door mode : 1.Four Digits(500 groups) 2.Four Digits+Card 3.Four Digits+Four Digits 4.Card+Card ____________________________________________________ Operating Temperature : -31℃~63℃ ____________________________________________________ Operating Humidity : 10~95 ___________________________________________________ Waterproof Grade : IP55 ____________________________________________________ Weight : 0.5kg ____________________________________________________ Easy programming and operation Single/multiple users optional,normal/safe operating models switchable Support up to 500 users Break proof,good choice for out door use LED blue Back light for buttons Built in door bell controller and buzzer ------------------------------------------------------------------------------------------------------------------------------------