2D51

2D51 Duct Smoke Detector for Special Applications The System Sensor 2D51 low-profile photoelectric smoke detector with a B210LP base tied to the D4P120 is listed to Underwriters Laboratories 268A specifically for use in no-flow/low-flow air-handling systems. 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 F  ield 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 C  ompatible for interconnection with System Sensor InnoviarFlex™ D4120 or D4120W duct smoke detectors and remote accessories 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 quic...