Operating temperature range –30°C to +60°C
Access Controller
> 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
| Unit Box Height | 0.09 |
| Unit Box Length | 0.19 |
| Unit Box Width | 0.14 |
| Operating temperature range | –30°C to +60°C |
| Dimensions | 155 × 106 × 50 mm |
| Units per Shipping Box | 1 |
| Unit Calculated Volume | 0.002394cubm |
| Product Net Weight | 0.35kg |
| Unit Calculated Weight | 0.41kg |
Switch DAHUA DH-SG4020 SG4020
Switch DAHUA DH-SG4010P Type L2 PoE ports 8 110 Watts SG4010P
Switch DAHUA DH-SMG1008 SMG1008 




Leo Marshall –
I recently installed the Dahua ASC2202B-S for my small office and I’m really impressed. The PoE support made wiring a breeze, and it handles our staff access logs perfectly. Scandi.cam delivered it quickly, and the build quality is solid. It’s a great, compact controller that does exactly what it’s supposed to.
Leo Marshall –