Time Attendance
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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