HVAC Systems

Displaying 1 to 6 (of 16 products)

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System Sensor RA100Z Remote Annunciator

RA-100Z remote annunciator is designed for both conventional and intelligent applications. This is a direct replacement for the discontinued RA-400Z

$29.95

System Sensor 2D51 Conventional Photoelectric Sensor Head

4-wire conventional photoelectric sensor head

$59.95

System Sensor APA151 Remote Annunciator

Remote annunciator with piezo alarm Specifications: APA151 Operating Temperature Range: 0°C to 49°C (32°F to 120°F) Operating Humidity Range: 10 to 93% non-condensing Dimensions: 4.6 in H x 2.9 in W x .45 in D Voltage Range: 16 to 33 VDC Alarm Current: max 30 mA

$39.95

System Sensor D2 Photoelectric Duct Smoke Detector

2-wire photoelectric duct smoke detector Specifications: D2 Wiring: 2-wire Operating Temperature Range: -4° to 158° F (-20° to 70° C) Storage Temperature: -22° to 158° F (-30° to 70° C) Operating Humidity Range: 0% to 93% Relative Humidity Non-condensing Air Duct Velocity: 100 to 4000...

$149.95

System Sensor D4120 4-Wire Photoelectric Duct Smoke Detector

4-wire photoelectric low-flow duct smoke detector Specifications: D4120 Wiring: 4-wire Operating Temperature Range: -4° to 158°F (-20° to 70°C) Storage Temperature: -22° to 158°F (-30° to 70°C) Operating Humidity Range: 0% to 95% relative humidity non-condensing Air Duct Velocity: ...

$169.95

System Sensor D4120W Watertight 4-Wire Duct Smoke Detector

Watertight 4 wire photoelectric duct smoke detector Specifications: D4120W Wiring: 4-wire Operating Temperature Range: -4° to 158° F (-20° to 70° C) Storage Temperature: -22° to 158° F (-30° to 70° C) Operating Humidity Range: 0% to 95% Relative Humidity Non-condensing Air Duct...

$199.95

Displaying 1 to 6 (of 16 products)

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