Silent Knight SD505-4AB 4-inch Addresable Base 09/03 CO sensor operation is similar

CO sensor operation is similar to other TrueAlarm sensors (photoelectric or heat)

Both surface and semi-flush mounting cabinet configurations maximize mounting flexibility and esthetic appeal

The Cooper Wheelock WPSBB-W Weatherproof Back Box provides robust protection for outdoor fire alarm systems

all i3 detectors are equipped with both drift compensation and smoothing algorithms

eBay Product Description

Silent Knight SD505-4AB 4-inch Addresable Base 09/03 CO sensor operation is similarThe Silent Knight SD505 4AB 4 inch Addresable Base is a 4" Addressable Base for use with SK SD505APS Addressable Photoelectric Smoke Detectors. Compatible for use with the SD505 APS, SD505 AIS, and SD505 AHS.