duct detector test switch for sale, brand-new and used.

BOSCH Security Systems D285DH Photoelectric Duct Smoke Detector Head (12 VDC or 24 VDC) Commercial or residential applications Two-wire or four-wire application, depending on base Chamber Check rapid-flash LED Automatic Trouble Indication reports contaminated chamber Flashing LED power indicator Steady-

NEW SM 501-P Series Photovoltaic Duct Smoke Detector FREE SHIPPING!

System Sensor intelligent non-relay duct smoke detector. Remote test capable.  Offered at great discount! Must order smoke head separately. 

These are two new, never used duct detector test switches. They are in the original box and come with the original paperwork. The boxes have been written on and are a bit marked up but the switches have only been out of the boxes for pictures.

Missing Original Packaging and Instructions Features: The RTS151 and RTS151KEY remote test stations are automatic fire detector accessories designed to test duct smoke detectors from a convenient location. For 4-wire detectors, the RTS151KEY test station features a multi-colored LED that alternates between steady green and red. For 2-wire detectors, the LED illuminates red for alarm.