System Sensor 5251P Fixed Temperature Sensor 903

The System Sensor 5251P is an intelligent sensor that utilizes a state-of-the-art thermistor sensing circuit for fast response. Also, this System Sensor 5251P sensor comes designed to provide open area protection with 50-foot spacing capability and is intend for use with compatible control panels only.

Two LEDs on each sensor light provide 360° visibility of the sensor indication. Besides, the LEDs can be latch ON by a code command from the panel for an alarm indication. The LEDs can also be unlatched to the normal condition by code command. In addition, remote LED annunciator capability is available as an optional accessory (Part No. RA400Z).

In general, the System Sensor 5251P sensor bases have a tamper-resistant capability. When this capability is enabled, sensors cannot be removed from the base without the use of a small screwdriver or other similar tools. Refer to the sensor base installation instruction manual for details in using this capability.

Features / Specifications

• Diameter: 6.1 inches (155 mm) installed in B210LP, 4.1 inches (104 mm) installed in B501
• Height: 2.0 inches (51 mm)
• Installation Temperatures: -4°F to 100°F (-20°C to 38°C)
• Operating Humidity Range: 10% to 93% Relative Humidity Non-condensing
• Voltage Range: 15 to 32 Volts DC Peak
• Standby Current: 300 µA @ 24 VDC (one communication every 5 seconds with LED blink enabled)
• LED Current: 6.5 mA @ 24 VDC
• Fixed Temperature Rating: 135°F (57°C)