EDWARDS SIGNALING SD-4WJ Duct Smoke Detector, Photoelectric, 24V DC, FM Listed
The EDWARDS SIGNALING SD-4WJ is a rectangular, surface-mount duct smoke detector with a photoelectric sensor and clear body, rated for 120V AC/20 to 31V DC/220 or 240V AC/24V AC/24V DC Volt and 35 mA. It provides a…
SKU 3G-OTH-546834
Also listed as: SD4WJ · SD 4WJ
Local availability & support — Singapore
- Local office
- 20 Woodlands Link #09-05, Singapore 738733
- Phone
- +65 8878 8355
- Delivery
- Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
- Payment
- Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
- Ships to
- Singapore
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Product Description
The EDWARDS SIGNALING SD-4WJ is a rectangular, surface-mount duct smoke detector with a photoelectric sensor and clear body, rated for 120V AC/20 to 31V DC/220 or 240V AC/24V AC/24V DC Volt and 35 mA. It provides a light alert, is FM-listed for indoor use, and is hardwired with a 24V DC voltage rating.
Frequently Asked Questions
What is the EDWARDS SIGNALING SD-4WJ duct smoke detector used for?
The EDWARDS SIGNALING SD-4WJ is a photoelectric duct smoke detector designed for indoor HVAC systems. It mounts on duct surfaces to detect smoke in air-handling units, triggering a light alert to enable early fire response in commercial or industrial facilities.
What are the specifications of the EDWARDS SIGNALING SD-4WJ?
The SD-4WJ is a rectangular, clear-body duct smoke detector with a photoelectric sensor. It operates on 120V AC, 20–31V DC, 220/240V AC, or 24V AC/DC, with a current rating of 35 mA. It is FM-listed for indoor use and hardwired with a 24V DC voltage rating.
Where to buy the EDWARDS SIGNALING SD-4WJ worldwide?
3G Electric supplies the EDWARDS SIGNALING SD-4WJ duct smoke detector to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time.
How to install the EDWARDS SIGNALING SD-4WJ duct smoke detector?
Install the SD-4WJ on a duct surface using the included mounting bracket. Ensure power is off before wiring to the appropriate voltage (120V AC, 24V DC, etc.). Follow NFPA 72 guidelines for spacing and airflow direction. Test the light alert after installation per the manufacturer's manual.
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3G Electric supplies EDWARDS SIGNALING smoke detectors for fire alarm systems. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
