Includes the features of the M-2A:
The MB-2 adds automatic bilge blower control. The blower is automatically started when a fume level of 16 to 20% LEL (lower explosive limit) is reached and remains on until fume level is safely lowered.
A 30 amp relay is standard.
The MB-2 system also includes a test button at the display module to activate the warning lamp, alarm horn and blower motor.
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