Johnson Controls 2951J Smoke Detector

The Johnson Controls 2951J is a commercial smoke detector designed for compatible Johnson Controls fire alarm systems. It provides dependable smoke detection for offices, schools, hospitals, warehouses, industrial facilities, and other commercial properties.

The detector features automatic sensitivity monitoring, rotary decimal addressing, dual status LEDs, and a plug-in design for simplified installation and maintenance. This product is intended exclusively for commercial fire alarm installations.

Product Functions

• Detects airborne smoke
• Reports alarm conditions
• Monitors detector sensitivity
• Supports automatic maintenance supervision
• Plug-in detector installation
• LED status indication
• Commercial fire alarm application

Electrical & System Information

The 2951J operates on compatible Johnson Controls signaling line circuits and occupies one device address. Detector sensitivity is programmable through the compatible fire alarm control panel and is continuously monitored to support preventive maintenance. Rotary decimal switches simplify device addressing during installation.

Features

• Commercial smoke detection
• Automatic sensitivity monitoring
• Rotary decimal addressing
• Dual status LEDs
• Plug-in detector head
• Low-profile housing
• Remote LED support
• Indoor commercial application

Mounting & Design

The 2951J installs on compatible Johnson Controls detector bases, including the B210LPJ and B501J. The plug-in detector design allows convenient installation, testing, cleaning, and replacement without rewiring the detector base.

Protection & Applications

Suitable for:

• Office Buildings
• Schools
• Hospitals
• Hotels
• Warehouses
• Industrial Facilities
• Government Buildings
• Commercial Properties

Compatibility

Compatible with:

• Johnson Controls Fire Alarm Control Panels
• FlashScan® Signaling Line Circuits
• CLIP Signaling Line Circuits
• B210LPJ Detector Base
• B501J Detector Base
• RA400Z Remote LED Annunciator
• DNR and DNRW Duct Detector Housings (where applicable)

Always verify compatibility with the installed fire alarm control panel and detector base before installation.

Technical Specifications

Manufacturer: Johnson Controls

Model: 2951J

Product Type: Commercial Smoke Detector

Detection Method: Smoke Sensing Chamber

Operating Voltage: 15–32 VDC

Standby Current: 300 µA @ 24 VDC

Operating Temperature: 32°F to 120°F (0°C to 49°C)

Operating Humidity: 10% to 93% RH Non-Condensing

Air Velocity Rating: 0–4000 ft/min

Status Indicator: Dual LEDs

Addressing: Rotary Decimal Switches

Mounting: Compatible B210LPJ or B501J Detector Base

Application: Indoor Commercial Fire Alarm Systems

Listings: UL Listed, ULC Listed, FM Approved, CSFM Listed, MEA Approved (application dependent).

Applications

The Johnson Controls 2951J is designed for commercial fire alarm systems requiring dependable smoke detection in offices, schools, healthcare facilities, hotels, warehouses, industrial buildings, retail centers, and other commercial occupancies. It also supports installation in compatible duct detector housings for approved HVAC applications.

2951J Datasheet