Honeywell 420-I (Analog Module) Honeywell The sensor cartridge SC2 includes

The sensor cartridge SC2 includes a high performance sensing element (electrochemical for toxic gases and pellistor type for combustible gases)

0-20% V/V Oxygen (O2) (2-Year Estimated Life)

Accepts max

or 3 gas sensor modules (3rd sensor with DR6 remote module)

communication bus

Honeywell 420-I (Analog Module) Honeywell The sensor cartridge SC2 includesCommunicates digitally with Vulcain transmitters within a true daisy chain network, converting the digital signals to analog outputs. Easy installation through daisy chain hook up (RS 485) Dedicated 4 20mA outputs for up to 8 transmitters Averaging minimum maximum reading for up to 16 transmitters