Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
RFQ CartGet a QuoteSign inSign up
SYSTEM SENSOR Smoke Alarm: Smoke, Hardwired, Smoke Detector, Photoelectric, Hardwired - Smoke Detectors
SYSTEM SENSORSmoke Detectors

SYSTEM SENSOR Smoke Alarm: Smoke, Hardwired, Smoke Detector, Photoelectric, Hardwired

The SYSTEM SENSOR 4WTA-B is a hardwired, photoelectric smoke detector for 4-wire fire alarm systems. It operates at 12/24V, emits an 85 dB @ 10 ft sound alert, includes a mounting base, and is FM Approved.

SKU 3G-OTH-546562

Brand
SYSTEM SENSOR
Item
Smoke Alarm: Smoke, Hardwired, Smoke Detector, Photoelectric, Hardwired
Category
Smoke Detectors
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

SYSTEM SENSOR
Manufacturer Part Number
4WTA-B
Type
Hardwired, Smoke Detector, Photoelectric, Hardwired, Round, 3 yr
Detects
Smoke
Includes
Mounting Base
Hush Mode
No
Standards
FM Approved
Alert Type
Sound
Sensor Type
Photoelectric
Test Button
No
Power Source
Hardwired
Volume Level
85 dB @ 10 ft
ADA Compliant
No
Compatible With
4 Wire Fire Alarm System
Operating Voltage
12/24V
Visual Alert Type
Green LED
Connectivity Broad
None
ADA Compliant [NEW]
No
Battery Backup [NEW]
No
Communication Protocol
Hardwire
Heat Detector Signal Type
Fixed
Backup Battery Broad DELETE AFTER PLAN
No
Product Features Broad DELETE AFTER PLAN
Voice Alert
Product Features Filter DELETE AFTER PLAN
Voice Alert
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

SYSTEM SENSOR Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SYSTEM SENSOR 4WTA-B is a hardwired, photoelectric smoke detector for 4-wire fire alarm systems. It operates at 12/24V, emits an 85 dB @ 10 ft sound alert, includes a mounting base, and is FM Approved.

Frequently Asked Questions

What is the SYSTEM SENSOR 4WTA-B smoke detector used for?

The SYSTEM SENSOR 4WTA-B is a hardwired photoelectric smoke detector designed for 4-wire fire alarm systems in commercial or industrial facilities. It detects smoke early and emits an 85 dB @ 10 ft sound alert, helping protect personnel and equipment.

What are the specifications of the SYSTEM SENSOR 4WTA-B?

The SYSTEM SENSOR 4WTA-B operates at 12/24V, uses photoelectric sensing, and produces an 85 dB @ 10 ft sound alert. It includes a mounting base, is FM Approved, and is compatible with 4-wire fire alarm systems. It has a green LED visual indicator.

Where to buy the SYSTEM SENSOR 4WTA-B worldwide?

3G Electric supplies the SYSTEM SENSOR 4WTA-B smoke detector to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time.

How to install the SYSTEM SENSOR 4WTA-B smoke detector?

Install the SYSTEM SENSOR 4WTA-B by mounting the included base to a ceiling or wall, wiring it into a 4-wire fire alarm system at 12/24V, and attaching the detector head. Follow local fire codes and the manufacturer's manual for proper placement and testing.

SYSTEM SENSOR Products

3G Electric supplies SYSTEM SENSOR smoke detectors. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

More from SYSTEM SENSOR

View all SYSTEM SENSOR parts →
SYSTEM SENSOR Smoke Alarm: Smoke, Hardwired, Smoke Detector, Photoelectric, Hardwired (MPN 2W-B). Key specifications — Operating Voltage: 12/24V; Sensor Type: Photoelectric; Volume Level: 85 dB @ 10 ft; Compatible With: 2 Wire Fire Alarm System; Includes: Mounting Base; Brand: SYSTEM SENSOR; Detects: Smoke; Battery Backup [NEW]: No.
SYSTEM SENSOR
SYSTEM SENSOR Smoke Alarm: Smoke, Hardwired, Smoke Detector, Photoelectric, Hardwired (MPN 2W-B). Key specifications — Operating Voltage: 12/24V; Sensor Type: Photoelectric; Volume Level: 85 dB @ 10 ft; Compatible With: 2 Wire Fire Alarm System; Includes: Mounting Base; Brand: SYSTEM SENSOR; Detects: Smoke; Battery Backup [NEW]: No.