2D51 SYSTEM SENSOR

Product Overview

The System Sensor 2D51 is a low-profile pendant/plenum smoke detector designed for no-flow or low-flow air-handling systems (0–4,000 FPM). It is installed on a B210LP base and wired to a D4P120 power board-only control unit, which can manage up to two 2D51 detectors. The detector features a twist-in/twist-out head for easy removal, cleaning, and maintenance.

Key Features

• Low-profile pendant/plenum smoke detector design
• Suitable for no-flow/low-flow air-handling systems (0–4,000 FPM)
• Low standby current with two LEDs blinking in standby mode
• Twist-in/twist-out detector head for quick cleaning and maintenance
• Built-in test switch and remote test/reset capability
• Field sensitivity metering compliant with NFPA 72 using RTS2/RTS2-AOS and SENS-RDR
• Mounts on a standard electrical box
• SEMS screws for easy wiring and secure wire retention
• Removable cover and insect screen for field cleaning
• Visual indication via LEDs; audible/visual status available through compatible remote annunciators