System Sensor 2D51 Photoelectric Smoke Detector

The System Sensor 2D51 can be used as a pendant mount detector in no-flow/ low-flow air-handling systems (0-4,000 FPM). The pendant /plenum mounted 2D51 installed into a B210LP base and wired to a D4P120 power board-only control unit. The D4P120 power board is capable of controlling up to two 2D51 sensors.

Pendant mounted in a standard electrical box within the duct, the twist-in/twist-out head allows easy removal from the base for quick cleaning as well as maintenance. The System Sensor 2D51 heads locally tested using a magnet or by using the test/reset push button on the D4P120 power board.

Remote testing accomplished using the RTS151, RTS151KEY, RTS-2 or RTS-AOS accessories connected to the D4P120 power board. The APA151, RTS2 and RTS2-AOS Remote Annunciators with Piezo Alarm can also connected to the D4P120 power board to provide an audible and visible indication of smoke detector status.

Features / Specifications

• Low-profile smoke detector design
• Low standby current
• Two LEDs blink in standby
• Detector head plugs easily into base
• Built-in test switch
• Designed for mounting on a standard electrical box
• SEMS screws for easy wiring and positive wire retention
• Removable cover and insect screen for field cleaning