Solid Signal > Tools and Installer Supplies > Installation Accessories > Ventev OSD308-48
The Smoke Detector 48 VDC is self-diagnostic, four-wire smoke detectors continually monitor their own sensitivity and operational status, and provide a visual trouble indication if they drift out of sensitivity range or fail internal diagnostics.
This unique, ESL patented technology meets NFPA 72 field sensitivity testing requirements without the need for external meters.
- Special Order Product. Non-Cancellable and Non-Returnable.
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