Bacharach MGS-402 dual-channel gas detection controller

The MGS-402 dual-channel gas detection controller from Bacharach enables ASHRAE 15, EN 378 and CSA B52 safety compliance for refrigerant, toxic and combustible gas detection applications. The system is designed for safety compliance in mechanical rooms, cold storage facilities, walk-in freezer and cold room applications to -40°F/C.

The MGS-402 is part of the MGS-400 series gas detectors that connect through Modbus to up to two remote MGS-410 gas detectors at up to 1000′ (305 m). The MGS-402 is powered by 110–240 VAC and provides three 10 A output relays (fault, low alarm, high alarm) to initiate auxiliary ventilation or restrict refrigerant flow. The MGS-402 also provides two analog outputs for interface to a BMS or fire/safety panel packaged in an IP66 enclosure. Upstream Modbus connectivity enables remote configuration and communication with building management systems.

The MGS-402 has a built-in audible alarm and high-visibility visual alarm that eliminates the need for an external horn/strobe in close proximity. The remote silence input enables silencing the alarm from outside the monitored environment. Configuration of the MGS-402 is simple and intuitive, reducing installation time.