Single sensor 4-wire photoelectric low-flow smoke detector.
Metal sampling tube duct widths 4 ft to 8 ft (1.2 to 2.4 m)
Metal sampling tube duct widths 2 ft to 4 ft (0.6 to 1.2 m)
RTS2-AOS is a multi-signaling accessory, with strobe, designed to work with InnovairFlex 4-wire conventional duct smoke detectors. AOS stands for Add On Strobe.