System Sensor 2D51 InnovairFlex Photoelectric Duct Smoke Detector
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.
Features
- 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
