Temperature switch project kit
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I am thinking of using the kit to turn on the gas water heater when the solar water is cool, the heater uses a 1.5 D battery to light the gas. I am guessing the heater's system needs the ampage a D cell provides so I want to hack into the Dcell compartment , cut the link and run it to a relay worked by the kit. If that sounds possible could you advise on a suitable relay.
ps I do have another question regarding this kit in either configuration, could it be used to detect a specific voltage on 1 to 3 rechargeable 1.2 volt batteries and switch off . I would like to make a solar lamp that will give out some useful light but do not want to completely empty the battery/ batteries every night.