SYSTEM SENSOR 4-WIRE DUCT PHOTO DETECTOR HEAD
Product Info
4-WIRE DUCT PHOTO DETECTOR HEAD
B210LP / B501
2D51 duct smoke detectors are low-profile photoelectric detectors designed for special applications, specifically for use in no-flow or low-flow air-handling systems (0 to 4,000 fpm). Pendant or plenum mounted 2D51 detectors are intended to be installed into B210LP bases and wired to a D4P120 power board only control units. D4P120 power boards are capable of controlling up to two 2D51 sensors. Pendant mounted in a standard electrical boxes within ducts, the twist-in/twist-out heads allows easy removal from bases for quick cleaning and maintenance. 2D51 heads can be locally tested using a magnet or by using the test/reset pushbutton on the D4P120 power board.
Low standby current
Two LEDs blink in standby
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
Certifications:UL Listed
FM Approved
CSFM
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