Conventional Heat Detector：WT105

General Description

   The device is intelligent sensors that utilize a state-of-the-art thermistor sensing circuit for fast response.These sensors are designed to provide open area protection with 50 foot spacing capability. The device is a rate-of-rise temperature sensor with 135°F fixed temperature alarm.The device is a rate-of-rise with fixed temperature alarm thermal detector utilizing a state-of-the-art dual thermistor sensing circuit. These detectors are designed to provide open area protection with 50-foot spacing capability, and are to be used with compatible control panels only. Two LEDs on each detector light to provide 360° visibility of the detector indication.

Features and Benefits

• Compatible with all the conventional fire alarm control panel
• Unpolarized wire input
• Wide range of operating voltages
• High precision electronic thermistor
• Built in microprocessor intelligent software
• Two LEDs blink standby, provide 360° visibility
• Insect-resistant screening
• Twist-on mounting base with tamper lock
• Remote Indicator LED can be connected

Technical Specifications

• Diameter: 103mm
• Height (including mounting base): 55 mm
• Weight: 155 g
• Operating Temperature Range: -10°C to 50°C
• Operating Humidity Range: 10% to 93% Relative Humidity, Noncondensing
• Latching Alarm: Reset by momentary power interruption

Electrical Ratings

• System Voltage (nominal): 24 VDC (9V~ 28VDC)
• Standby Current: 40 μA @ 24VDC
• Alarm Current: 30 mA @ 24VDC
• Fixed Temperature Rating: 57°C (135°F)
• Rate of Rise Detection: Responds to greater than 15°F/min

Installation Guidelines

   All wiring must be installed in compliance with the Nationa Electrical Code, applicable state and local codes, and any special requirements of the local Authority Having Jurisdiction.

Ordering Information