MGS-402 Gas Detection Controller

2-Channel Controller for Refrigerant, Toxic and Combustible Gas Detection 

• Centralized power and alarming for up to 2 connected MGS-410 gas detectors
• Modbus RTU Master / Slave provides seamless integration from connected gas detectors to third-party BMS
  / BAS
• Audible and visual alarms enable compliance with ASHRAE 15 / EN 378 / CSA-B52 –no additional hardware
  required.

Bacharach’s MGS-402 Gas Detection Controller centralizes the status of up to two MGS-410 Gas Detectors, provides 
a complete package for your safety compliance application. On the front panel of the MGS-402 a bank of LEDs 
corresponds to each connected gas detector; showing power, alarm status and fault indicators. The MGS-402 can 
provide the power requirements for to up to two gas detectors, which can be daisy-chained with Modbus 
communication to each gas detector; simplifying and reducing the cost of installation.

Combining the MGS-402 Gas Detection Controller with Bacharach’s MGS-410 Gas Detector provides a complete, 
single source gas detection system with an easy means of achieving compliance with refrigeration safety standards 
such as ASHRAE 15, EN 378 and CSA-B52.

Technical Specifications

Enclosure Rating			        IP66

Operating Temperature		        -40 - 113°F (-40 - 50°C)

Power				                100 - 240 VAC, 50/60 Hz, 20W (max); 24 VDC

Size (W×H×D) Approx.		        6.5 × 6.5 × 3.4" (165 × 165 × 87mm)

Weight Approx.			        1 lb, 11.07 oz (758 g)

Cable Entries			        2 × M20 / 1/2″ Conduit (Power), 6 × M16 Cable Glands (Communications)

Approvals				        CE, UL / CSA / IEC EN 61010-1

Product Details

User Interface			        Front Panel Push Buttons; DIP Switches

Configurable Relays			1 × Low Alarm, 1 × High Alarm, 1 × Fault (240 VAC @ 10A)

Analog Output			        2 × Configurable 4-20mA, 1-5, 2-10VDC

Alarm Silence			        2 × Front Panel Push Buttons, 1 × Auxiliary Input

Serial Ports			                1 × RS485 Modbus RTU Slave for BMS / BAS, 1 × RS485 Modbus RTU Master 
                                                for Gas Detectors