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  • D21XKV-SMH surface mounting housing, back box

    • DoorBird D21XKV-SMH surface mounting housing (back box)
    • Add this to your D2101V to allow it to be surface mounted. Perfect for retro-fits.
    • Multiple colors available to match your Doorbird:
    • V2A Stainless Steel is IP65,
    • V4A in all finishes is IP65 with chrome-nickel steel with molybdenum additive for harsh conditions and is Salt-Water resistant.


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  • Four-Door Slave Access Control Module Dahua Technology ASC2204B-S

    • Support TCP/IP communication
    • Two dual communication protocols: RS-485 and Wiegand (W26 and W34)
    • Holds 100,000 users and stores 500,000 card swiping records
    • Support interlock, group combination, anti-passback, remote unlock, and more
    • Support card reader tamper alarm, intrusion alarm, door sensor timeout alarm, duress alarm, illegal card exceeding threshold alarm, and incorrect password alarm
    • Built-in RTC, support manual time synchronization and auto time synchronization
    • Support power-off memory protection and online upgrade
    • Support watchdog (a device that protects a system from software or hardware failures)
    • Support PoE power supply


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