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Hi all,

Does anyone know what this is? In the photo below it is the thing with the led light on, it's some kind of alarm and it's beeping. It's at floor level in a bedroom in a newish block of flats.
Thanks

[ElectriciansForums.net] What is this?
 
The manual mentions:
Gases and vapours other than the target refrigerant gas, may cause semi-conductor sensors to react. Sensors exposed to silicon fumes may be permanently damaged. The accumulation of volatile organic compounds resulting from human occupation in a poorly ventilated room may cause inaccurate operation. Adequate room ventilation should be maintained at all times.

Not heard of this device before but it would be useful on a large system with many evaporators sharing a single large condenser unit.
 

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