Zudsec Waterproof Standalone Access Controller ZDAC-2400W-WiFi Exquisite designs with non-masking Metal shell: Metal shell + Silica gel button(Metal button optional) Keystroke backlight Card appliance: 125kHz EM ID cards Reading range: up to 5 cm Change Codes 1 master,2000 users & prox cards Door open detection Door relay time 00-99 seconds; Alarm time 00-99 minutes Wiring Connections: Electric Lock, External Bell,  External Push Switch, Magnetic Contacts Alarm function Non volatile Eeprom memory Application: luxurious office building, bank, Prisons Card Types : EM or EM compatible  Codes :  2000 users  Induction Distance :  3~6cm   Door Relay :  3A  Alarm output load : 3A  Tamper Protection :  Negative loop, normally closed  Keypad :  12 keys, 3 LED status indicators   Wiring Connections :  Electric lock / Remote Request to Exit/ Door open detection / External door bell/ External Alarm  Memory :  Non volatile eeprom memory  DC Supply Voltage :  Low voltage input, 12 ±10% Vdc unregulated  Current Consumption : 100mA @ quiescent maximum  Operating Temperature : 0°C to 60°C (32°F to 140°F)  Keypad Housing :  Metal  Dimensions :  143mm x 58mm x 25mm  Weight : 500g