If you pick up the Much More controller it will turn just about any set of tyre warmers into a temp controllable set. Plug it in between power supply and tyre warmers, insert the thermometer and away you go.
Connectable all type of tire warmers.
7.2 V~14.0 V Input
Quick adjustable volume
Relay switch operation
Temperature is based on the tire surface.
LM35DZ thermo sensor included.
Just put it close to tire warmer's hot wire then set temperature by volume.
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Muchmore Tirewarmers are great. But a bit pricey. Speedmind temp regulated tirewarmers are ok and very cheap. But it does not come with any thermal adjusment. You can also use the Muchmore tire warmer switch with the Speedmind. But if you want a cheaper one, you can install a dial switch (used on lamps and ceiling lights) that can be bought at electrical harware shops for about $3. That will serve as the thermal adjustment.