Fire Fighting in Canada

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Timer shuts down lights to avoid draining batteries

The Cole Hersee FlexMod 48636 Electronic Timer unit automatically turns off interior lights, protecting starting batteries from being drained by leaving lights on for extended periods. Superior to conventional mechanical “egg-timer” units, the FlexMod 48636 Electronic Timer is an electronic timer with integral warning feature. To operate interior lights, the vehicle operator presses a momentary switch for up to 20 minutes of lighting, after which the unit offers a series of increasingly urgent warnings within the cargo compartment before the lights turn off, giving the driver the option to reset the unit for a further 20 minutes or exit the work area. FlexMod can be controlled from two switches, so one can be installed at the back of a compartment and one at the front. The dual voltage timer works on 12-volt and 24-volt systems and features a compact design (4-inches by 3-inches by 1-inch), and is waterproof, dustproof, and vibration-proof. The FlexMod 48636 Electronic Timer can be mounted anywhere on a vehicle, even areas where road-splash is a problem. It is sealed to IP67 standard. It has no moving parts, which results in very high reliability. For more information visit

April 6, 2011 
By Carey Fredericks

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