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200 Series mounting Base



Product Description

Mircom’s mounting bases and kits provide a variety of ways to install detectors in any application. Mircom offers relay, isolator, and sounder base options for the MIX-200 Series detectors. Relay bases provide one form C contact relay for control of auxiliary functions, such as door closure and elevator recall. Isolator bases allow loops to continue to operate under fault conditions and automatically restore when the fault is removed.
The Sounder base is available in a combination temporal 3 and continuous tone model (B200SR). The 200 Series Bases provide a variety of mounting options to meet your installation challenges. Bases come in flanged or flangeless versions for mounting to a variety of junction boxes. See the 200 Series Junction Box Selection Guide on the next page for junction box options. Surface mounting boxes are also available.

Additional information

Features and Benefits

• Bases enable quick and secure detector plug-in
• SEMS screws provide easy wiring connection
• Support for 12-24 AWG provides installation flexibility
• Multiple accessory options provide mounting flexibility
• Sounder bases are compliant with UL 464 and
UL 864


B224RB/B224BI Electrical Ratings

Operating Voltage
15-32 VDC (powered by SLC)

Standby Current
170/450µA max

Set Time (B224RB only)
Short Delay: 60 to 100 msec
Long Delay: 60 to 10 sec

Reset Time(B224RB only)
20 msec max

Relay Characteristics (B224RB only)
2 coil latching relay
1 form C contact

UL/ULC Rating:
0.5 A @ 125 VAC
0.9 A @ 125 VDC
3 A @ 30 VDC

B200SR Electrical Ratings
External Supply Voltage
16-33 VDC (VFWR)

Standby Current
500 µA max

Sound Output
Greater than 90 dBA measured in anechoic room at 10 feet, 24 volts, 85 dBA minimum in UL reverberant room
Alarm Current
35 mA max