Functional Features：

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Applied in the G7 series fire alarm system, it is used for switching between normal broadcasting and fire broadcasting in the bus based fire broadcasting system. It is used to directly switch between normal broadcasting and fire broadcasting in the fire zone through encoding or floor switching. The bus has no polarity.

Technical Parameter：

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Working voltage: DC14-24V
Monitoring current: ≤ 2.0mA
Starting current: ≤ 10.0mA
Contact capacity: 2A 30VDC; 0.5A 125VDC
Fire broadcast line monitoring voltage: DC 50-80V
Fire broadcast line monitoring current: ≤ 0.3mA
Dimensions: 85mm × 85mm × 36mm
Shell protection level: IP30

Usage environment：

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