Product Description
2251B SYSTEM SENSOR ADDRESSABLE SMOKE DETECTOR
$81.00
2251B SYSTEM SENSOR ADDRESSABLE SMOKE DETECTOR
Description
GENERAL DESCRIPTION
Models 2251B, 2251TB and 2251TMB are plug-in type smoke sensors that combine a photoelectronic sensing chamber with addressable-analog communications. The sensors transmit an analog representation of smoke density over a communication line to a control panel. Rotary-decade switches are provided for setting the sensor’s address. Two LEDs on the sensor are controlled by the panel to indicate sensor status. An output is provided for connection to an optional remote LED annunciator (P/N RA400Z/RA100Z). Models 2251TMB and 2251TB combine a photoelectronic sensing chamber and 135°F (57.2°C) fixed temperature heat detector. The 2251B, 2251TB and 2251TMB require compatible addressable communications to function properly. Connect these sensors to listed-compatible control panels only.
BEFORE INSTALLING
This sensor must be installed in compliance with the control panel system installation manual. The installation must meet the requirements of the Authority Having Jurisdiction (AHJ). Sensors offer maximum performance when installed in compliance with the National Fire Protection Association (NFPA); see NFPA 72.
SPECIFICATIONS
Operating Voltage Range: 15 to 32 VDC
Standby Current: 300μA @ 24 VDC (one communication every 5 seconds with LED blink enabled)
Maximum Alarm Current (LED on:) 6.5 mA @ 24 VDC
Operating Humidity Range: 10% to 93% Relative Humidity, Non-condensing
Operating Temperature Range: 32°F to 120°F (0°C to 49°C) 2251B; 32°F to 100°F (0°C to 38°C) 2251TB and 2251TMB
Heat Sensor: 135°F Fixed Temperature Electronic Thermistor
Height: 2.0 ̋ (51 mm) installed in B210LP Base
Diameter: 6.1 ̋ (155 mm) installed in B210LP Base; 4.1 ̋ (104 mm) installed in B501 Base
Weight: 5.2 oz. (147 g)
Additional information
| Weight | 1 lbs |
|---|---|
| Brand |
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