Silent Knight SD505-APS Smoke Detector - Refurbished, Tested W/ Canned Smoke, Same Day Shipping

Need a replacement smoke detector for your Silent Knight fire alarm system?

This is a refurbished SD505-APS unit that's been gone through with care.

Each one was pulled from a working system, then we cleaned the smoke chamber and tested it with canned smoke to make sure it responds properly when connected to a fire alarm control panel (FACP).

It's a great, cost-effective way to replace faulty units in your commercial or industrial system.

We offer same-day shipping, so you won't be waiting around.

These are solid units ready to provide reliable detection.

Order with confidence knowing it's been professionally checked and tested.