- Fast Shipping
- Huge Inventory
- Trusted by Contractors
- 24/7 Ordering
The System Sensor 2W-B is a commercial 2-wire smoke detector engineered for compatible conventional fire alarm systems. As part of the System Sensor i3 Series, it utilizes photoelectric smoke sensing with automatic drift compensation to provide dependable smoke detection while helping minimize nuisance alarms caused by dust accumulation and environmental changes.
Its low-profile housing, plug-in detector head, and dual-color LED indicators simplify installation, maintenance, and routine testing. This product is intended exclusively for commercial fire alarm installations.
The System Sensor 2W-B operates on compatible 2-wire conventional initiating device circuits with an operating voltage range of 8.5–35 VDC. Automatic drift compensation and smoothing algorithms continuously adjust detector sensitivity to maintain dependable operation over time.
When paired with the optional 2W-MOD2 maintenance module, the detector supports remote maintenance indication and loop testing from the fire alarm control panel without requiring individual detector testing.
The 2W-B includes an integrated mounting base compatible with 3½-inch and 4-inch octagonal boxes, single-gang boxes, and 4-inch square electrical boxes with plaster rings. It may also be mounted directly to drywall using the supplied anchors where permitted by applicable codes.
The plug-in detector head allows quick removal for cleaning, inspection, testing, or replacement without disturbing the installed field wiring.
Suitable for:
Compatible with:
Always verify compatibility with the installed fire alarm control panel, initiating device circuit, and project requirements before installation.
Manufacturer: System Sensor
Parent Company: Honeywell
Model: 2W-B
Series: i3 Series
Product Type: Commercial 2-Wire Smoke Detector
Detection Method: Photoelectric Smoke Sensing
Circuit Type: 2-Wire Conventional
Operating Voltage: 8.5–35 VDC
Maximum Ripple Voltage: 30%
Average Standby Current: 50 µA
Peak Standby Current: 100 µA
Maximum Alarm Current: 130 mA (Panel Limited)
Nominal Sensitivity: 2.5% Obscuration per Foot
Status Indicators: Dual-Color LEDs
Testing: Built-In Magnetic Test Capability
Mounting: Integrated Plug-In Base
Operating Temperature: 32°F to 100°F (0°C to 38°C)
Operating Humidity: Up to 95% RH Non-Condensing
Application: Indoor Commercial Fire Alarm Systems
Listings: UL 268, ULC (Canadian models), FM Approved, CSFM, MEA, and additional regional approvals where applicable. Verify product labeling for the intended installation.
The System Sensor 2W-B is designed for commercial fire alarm systems requiring dependable smoke detection on conventional two-wire initiating device circuits. Typical applications include offices, schools, hospitals, hotels, apartment buildings, retail stores, warehouses, government facilities, and other commercial occupancies where conventional smoke detection is specified.
| Weight | 2 lbs |
|---|---|
| Dimensions | 7 × 7 × 6 in |
Your Payment information is processed securely. We do not store credit card details, nor have access to your credit card information.
Orders ship same day
Thousands of parts in stock
Reliable products & service
Order anytime, anywhere
The System Sensor 2W-B is a commercial 2-wire smoke detector engineered for compatible conventional fire alarm systems. As part of the System Sensor i3 Series, it utilizes photoelectric smoke sensing with automatic drift compensation to provide dependable smoke detection while helping minimize nuisance alarms caused by dust accumulation and environmental changes.
Its low-profile housing, plug-in detector head, and dual-color LED indicators simplify installation, maintenance, and routine testing. This product is intended exclusively for commercial fire alarm installations.
The System Sensor 2W-B operates on compatible 2-wire conventional initiating device circuits with an operating voltage range of 8.5–35 VDC. Automatic drift compensation and smoothing algorithms continuously adjust detector sensitivity to maintain dependable operation over time.
When paired with the optional 2W-MOD2 maintenance module, the detector supports remote maintenance indication and loop testing from the fire alarm control panel without requiring individual detector testing.
The 2W-B includes an integrated mounting base compatible with 3½-inch and 4-inch octagonal boxes, single-gang boxes, and 4-inch square electrical boxes with plaster rings. It may also be mounted directly to drywall using the supplied anchors where permitted by applicable codes.
The plug-in detector head allows quick removal for cleaning, inspection, testing, or replacement without disturbing the installed field wiring.
Suitable for:
Compatible with:
Always verify compatibility with the installed fire alarm control panel, initiating device circuit, and project requirements before installation.
Manufacturer: System Sensor
Parent Company: Honeywell
Model: 2W-B
Series: i3 Series
Product Type: Commercial 2-Wire Smoke Detector
Detection Method: Photoelectric Smoke Sensing
Circuit Type: 2-Wire Conventional
Operating Voltage: 8.5–35 VDC
Maximum Ripple Voltage: 30%
Average Standby Current: 50 µA
Peak Standby Current: 100 µA
Maximum Alarm Current: 130 mA (Panel Limited)
Nominal Sensitivity: 2.5% Obscuration per Foot
Status Indicators: Dual-Color LEDs
Testing: Built-In Magnetic Test Capability
Mounting: Integrated Plug-In Base
Operating Temperature: 32°F to 100°F (0°C to 38°C)
Operating Humidity: Up to 95% RH Non-Condensing
Application: Indoor Commercial Fire Alarm Systems
Listings: UL 268, ULC (Canadian models), FM Approved, CSFM, MEA, and additional regional approvals where applicable. Verify product labeling for the intended installation.
The System Sensor 2W-B is designed for commercial fire alarm systems requiring dependable smoke detection on conventional two-wire initiating device circuits. Typical applications include offices, schools, hospitals, hotels, apartment buildings, retail stores, warehouses, government facilities, and other commercial occupancies where conventional smoke detection is specified.
| Weight | 2 lbs |
|---|---|
| Dimensions | 7 × 7 × 6 in |
There are no reviews yet.
Your Payment information is processed securely. We do not store credit card details, nor have access to your credit card information.
Select at least 2 products
to compare
Reviews
There are no reviews yet.