System Sensor 2151 Smoke Detector

System Sensor 2151 Smoke Detector Specifications  - Air Duct Velocity 0 to 3000 fpm  - Alarm Current: See base specifications  - Detection: Photoelectric  - Dimensions: 1.66"H x 6.1 Diameter  - Operating Humidity Range 10% to 93% non-condensing  - Operating Humidity Range: 10% to 93% RH, non-condensing  - Operating Temperature Range 32°F to 120°F (0°C to 49°C)  - Operating Temperature Range: 32° to 120°F (0° to 49°C)  - Operating Voltage: (Mounting Base Dependent)  - Replacement 2151  - Shipping Weight 3.6 oz. (104 g)  - Standby Ratings 85 mA max.  - Voltage Range See B114LP base specifications  - Weight: 3.1 oz. (88 g)