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System Sensor 2D51 NO or Low Flow Smoke Detector, 4 Wire | 2D51

System Sensor 2D51 NO or Low Flow Smoke Detector, 4 Wire | 2D51

Name: System Sensor 2D51 NO or Low Flow Smoke Detector, 4 Wire | 2D51
Brand: System Sensor
SKU: 2D51
Price: 152.58 USD
Availability: InStock

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SKU:: 2D51

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UPC:
Condition:: New
Width:: 8.00 (in)
Height:: 4.00 (in)
Depth:: 6.00 (in)

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Overview

System Sensor 2D51 NO or Low Flow Smoke Detector, 4 Wire | 2D51

Product details

Description

Product Summary

The System Sensor 2D51 NO or Low Flow Smoke Detector, 4 Wire is a professional-grade replacement part from System Sensor. InnovairFlex® Duct Smoke Detection collection is designed to save you time and money while providing the flexibility you need in the field.

Duct smoke detectors sense smoke in the HVAC air stream and shut down air handlers to keep smoke from spreading through a building, as required by many mechanical and fire codes for systems above 2,000 CFM. This group includes detector housings, sampling tubes, remote test stations, annunciators, and accessories.

Key Features

Accepts 24V or 120V supply voltage
Built-in test switch
Compatible with System Sensor InnovairFlex® D4120 or D4120W
Designed for mounting on a standard electrical box
Detector head plugs easily into base
Low profile smoke detector
Low standby current
Remote push button Test/Reset
Removable cover and insect screen for field cleaning

White Paper

System Sensor 2D51 Product Specification Sheet (PDF)

What's Included

(1) System Sensor 2D51 NO or Low Flow Smoke Detector, 4 Wire

Safety: Always disconnect power and follow lockout/tagout procedures before servicing electrical components. Installation should be performed by a qualified technician.

Comfort for the people who live there

The right equipment keeps the rooms you live in steady and quiet, whether it's dinner in the kitchen or a weekend project in the garage.

Specifications

Extra Information

Find your comfort-ready size with confidence

Get a fast, learning-friendly estimate for tons and BTUs, then review it with a Pro to dial in the perfect fit for your home.

Quick sizing snapshot

Enter your home size and a few basics to see a quick HVAC365 sizing snapshot you can review with a Professional.

Home size (sq ft)

Enter at least 100 sq ft.

Use conditioned square footage only; skip garages and unfinished basements.

Climate

We’ll auto-detect for U.S. visitors.

Home type

Select your home type.

Shared walls and insulation levels change the load—pick what matches your structure.

System type

Choose a system type.

Match the system to your ductwork, fuel, or preferred heat source for best comfort.

This is a sizing estimate for general guidance only. Always confirm final size, duct design, and fuel type with a Professional before purchasing equipment or pulling permits.

Brand:

System Sensor

Width:

8.00 (in)

Height:

4.00 (in)

Depth:

6.00 (in)

Weight:

3.00 LBS

Safety Information:

⚠ WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Prop 65 Warning:

Yes

Part Type:

Duct Smoke Detector

Operating Temperature:

-4°F to 158°F (-40°C to 70°C)

Operating Humidity:

0 to 95% RH (Non-condensing)

Model Number:

2D51

Please Note: To validate the manufacturer's warranty, equipment must be installed by a qualified licensed professional in accordance with local codes and the manufacturer's installation requirements.