Functional Features：

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The GM620 base is used to connect the GM701 manual fire alarm button, GM702 fire hydrant button, GM603W manual fire alarm button, and GM604W fire hydrant button

Technical Parameter：

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Dimensions: 86mm × 86mm × 15mm

Installation hole spacing: 62mm

Usage environment：

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Temperature: -10 ℃~50 ℃

Relative humidity: ≤ 95% RH (40 ℃± 2 ℃)