System Sensor D4120 4 Wire Photoelectric Low-Flow Duct Smoke Detector The SYSTEM-SENSOR-D4120 4-wire photoelectric, low-flow, duct smoke detector senses smoke in the most challenging conditions, operating in airflow speeds of 100 to 4,000 feet per minute, temperatures of -4 degrees F to 158 degrees F, and a humidity range of 0 to 95 percent (non-condensing). A plug-in sensor head offers improved false alarm immunity and simple installation, testing, and maintenance.
• Plug-in detector line, mounting base included• Large wire entry port• In-line terminals with SEMS screws• Mounts to octagonal and single-gang back boxes, 4-square backboxes, or direct to ceiling• Stop-Drop ’N Lock attachment to base• Removable detector cover and chamber• Built-in remote maintenance signaling• Drift compensation and
The System Sensor RTS151KEY(A) is an automatic fire detector accessory designed to test remotely located duct and beam detectors. For 4-wire detectors, the RTS151KEY(A) features a multi-colored LED that alternates between steady green and red. Green indicates power and that the detector board is in place.
NEW System Sensor RTS151KEY - The RTS151 and RTS151KEY remote test stations are automatic fire detector accessories designed to test duct smoke detectors from a convenient location. For 4-wire detectors, the RTS151KEY test station features a multi-colored LED that alternates between steady green and red. For 2-wire detectors, the LED illuminates red for alarm.
Item is BRAND NEW IN BOX! Please check out the other items I'm selling as we have a lot of fire alarm items for sale. Accepting offers too - looking to unload!
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