System Sensor 2D51 Photoelectronic Detector
Photoelectronic Low-Profile Plug-In Detector for Special Applications. For replacement purposes with 4-wire InnovairFlex duct smoke detectors
Note: The 2D51 needs to be used with the D4P120 and B210LP for pendant mount applications.
The 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 is to be 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 and maintenance. The 2D51 heads can be locally tested using a magnet or by using the test/reset push button on the D4P120 power board.
| Manufacturer Part Number | 2D51 |
|---|---|
| Features | Features for 2D51/B210LP/D4P120 |
Features for 2D51/B210LP/D4P120
• Low-profile smoke detector design
• Low standby current
• Two LEDs blink in standby
• Detector head plugs easily into base
• Built-in test switch
• Field sensitivity metering of detector to meet the requirements of NFPA 72 with the use of RTS2/RTS2-AOS and SENS-RDR
• 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
• Remote push button Test/Reset, LEDs provide visual indications
• Onboard supervisory and alarm relays
• Accepts 24 or 120V supply voltage
• Interconnect up to 100 units for common functions
• Compatible for interconnection with System Sensor InnoviarFlex™ D4120 or D4120W duct smoke detectors and remote accessories


