Designed for easy installation, set-up and operation, the Sentinel II Area Monitor from Scott Instruments provides economical detection of toxic and combustible gases. Gas sensors are simply plugged in and can be located up to 4,000 ft. away from the receiver module. Field-proven combustible gas sensors include a remote calibration port and, if needed, can be connected to duct mount or remote flow sampling applications. The unit features configurable alarm relays, two 4-20mA outputs, 100-event data storage and more.Scott Instruments, Exton, PA.