In addition to gas fumes, the MB-1-R can also detect high concentrations of battery hydrogen or engine exhaust. Indicator lamp automatically increases in brightness during daylight and softens at night. Previously model# MB-1. Featuring high-tech styling, compact size, circuitry test, and alarm horn mute functions. Standard two-inch display unit with gasoline sensor and twenty feet of plug-together lead. The MB-1-R adds a 10 amp relay to automatically start the bilge blower fan should gasoline fumes be detected. Installation requires only the addition of two wire leads from the control to the blower switch. To test, simply touch the test pad on the control: the red alert lamp will glow, the alarm horn will sound and the blower motor will start. The system works with power requirements of up to ten amps at 12 VDC. Gasoline fumes in a bilge or engine compartment, with or without a blower fan, have the potential to be a serious risk at any time. First, because fuel leaks create new fumes as rapidly as the blower clears old fumes away. With the fan off, the hazard is increased. Second, the blower fan is typically operating prior to engine start-up, thus offering no protection from the ignition of fumes be electrical short circuit, battery hydrogen explosion, smoking, or their causes. Includes a single channel gasoline fume detector with plug-in sensor, plus a 10 amp relay that automatically starts the bilge blower fan.
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