Functional Features：

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Applied in the G7 series fire alarm two-line system, this circuit repeater is used to connect G7 series explosion-proof equipment. GM748A is installed between explosion-proof and non explosion-proof areas, used for isolation of lines inside and outside the explosion-proof area. Connect the explosion-proof area to the G7 system through this device. The output end is connected to the S2004 explosion-proof safety barrier for use.

Technical Parameter：

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Power input voltage: 18~30V
Bus input voltage: DC 14~28V, non-polar
Bus drive current: 1.2A
Operation indicator light: red
Output indicator light: green
Dimensions: L160mmxW82mmxH42mm

Usage environment：

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Environmental temperature: -10 ℃ to+50 ℃
Relative humidity: ≤ 95% RH (40 ℃± 2 ℃)