DSC Security Products BV-500 SF 16/01 this detector pulls double duty:

this detector pulls double duty: continually monitoring the environment for signs of fire — as well as its invisible yet deadly companion

The D9127 modules are wired in parallel on the D8125 data loop

Trident 660 2021-2024

two-wire systems where the individual address of each module is selected using rotary decade switches

double gang

DSC Security Products BV-500 SF 16/01 this detector pulls double duty:The Bravo5 is a ceiling mount detector designed to provide reliable motion detection for residential and commercial applications. The Bravo5 uses a special Fresnel lens made for 360 detection in conjunction with a quad element PIR sensor optimized for uniform detection all around its field of view. Special attention is given to false alarm immunity against RF, static, electrical transient to ensure trouble free operation for many years.