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The Johnson Controls GM200-MH00 is an A2L refrigerant leak detection sensor for R32 applications that provides continuous monitoring and digital integration. It uses speed-of-sound sensing and outputs RS485 Modbus for building automation, operates from a 24 V supply, and includes a 2 ft pre-wired cable with a male connector. The sensor features continuous self-calibration, IP54 enclosure protection, and a factory-set 25% LFL alarm threshold with rapid detection response.
A2L R32 leak detection with speed-of-sound sensing, RS485 Modbus, 24 V power, IP54 enclosure, and <7 s response.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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