Functional Features：

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The GM742 is installed between the explosion-proof area and the non-explosion-proof area to isolate the lines inside and outside the explosion-proof area. The GW602Dex, GY602Ex and GM601FEx in the explosion-proof area are connected to the G7 system through this equipment. The explosion-proof box contains one S2004 explosion-proof safety barrier and one relay module.

Technical Parameter：

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wire system: signal bus two,non-polar 

bus voltage: DC24V,non-polar 

Monitoring current: ≤0.6mA

Alarm current: ≤1.2mA

Alarm indicator light: red 

Fault indicator light: yellow 

Overall dimensions: L250mm×W154mm×H53mm  

Usage environment：

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Ambient temperature: -10℃～+50℃

Relative humidity: ≤95%RH（40℃±2℃）