2W-B

The Honeywell/System Sensor 2W-B from the i3 Series is a conventional 2-wire photoelectric smoke detector designed for reliable fire detection in residential and commercial applications. It includes a plug-in mounting base and features intelligent drift compensation with smoothing algorithms to reduce nuisance alarms.
Key Specifications
Feature
Details
Detection Type
Photoelectric optical chamber 
Voltage
12/24 VDC (8.5-35V range) 
Standby Current
50 µA average 
Alarm Current
130 mA (panel-limited) 
Sensitivity
2.5% /ft. nominal 
Temperature Range
32°F–120°F (0°C–49°C) 
Dimensions
5.3" diameter × 2.0" height (127 × 51 mm) 
Mounting
Plug-in base, multiple back box options