The DC22 controls one door. It connects on the local RS485 bus to SR34i and works with a variety of card readers (including magnetic stripe, proximity, hands-free, or third-party readers) and keypads. The DC22 also has features like relay outputs for alarm control with ASF (alarm status feedback) when implemented with an intrusion system, and can control an extra motorlock (e.g. Day&Night function). It also has a built-in display for status and error information.

Interface	BC-link, Clock&Data or Wiegand (26 bit, 32 bit, 8 bit burst), RS485 system com bus
Operating temperature	-35 to +50 °C
Operating voltage	8 to 40 VDC or 8 to 30 VAC
Current consumption	60 mA
Dimensions (WxHxD)	248 x 182 x 55 mm