AC11201 Temperature Sensor for Floor Heating Applications

Still working fine after two years

I have installed four Honeywell AC11201 Temperature Sensor for Floor Heating Applications, two each (one hooked-up, one backup) in two bathrooms, and all four have functioned as they should. When installing, they all tested at around 11kOhms and no problems with them being messed-up by the install. The AC11201 installs nicely into a Ditra-Heat system. The thermistor will push down between the plastic knobs on the Ditra-Heat, and dabs of hot-melt glue will hold the wire and thermistor in place while your scratch coat or tile is being placed.

I have put heated tile floors in both of our bathrooms. The system works well and I bought this on the suggestion of a friend to have a back-up in case one sensor stopped working. If you don't install a back-up sensor, you're going to be screwed if the first sensor dies. I installed this one about six inches away from the other and pulled the wire up the wall so that it is coiled in back of the control box with a note reminding me what it is. A friend of mine who also installed a heated tile floor is kicking himself for not thinking of a back-up sensor. I may never have to use it, but I'm glad it is there just in case.

Really not much feature wise to discuss here, but the item seems quality and is easy to hook up. I put two down under my radiant floors incase one sensor goes bad. I used hot glue to hold the item in place. Seems durable enough unless you step on the sensor or smack it with a hammer.The line itself is your standard low voltage type line.

Went ahead and added a second temperature sensor to the floor heat system to make sure I had at least one that would work at all times. Great suggestion by installation instructions, but should be included in main package.

This item was installed as a backup probe in case the primary temperature sensor fails. Since the primary sensor stills works, I can only hope that one will work when and if needed. It did test out properly before installation.

I ordered this as a backup sensor for my NuHeat floor mat and thermostat. Looked the same as the NuHeat sensor in the pictures and a multimeter confirmed that it works the same when I received it. Cost a whole lot less than the sensor that's branded NuHeat. Very cheap insurance in case your primary sensor fails!

I needed a replacement sensor for my Laticrete thermostat after the original was damaged in the bathroom remodeling. This looked exactly like the original, down to the wire. The resistance was also the same and changed appropriately when I held the sensor in my hand. Went into the floor very easy and I hope it will work well once the tiling is finished. This time I buried the wires in 20 mm self leveling mortar and will never again use the "recommended" method of thin-setting the tiles right over the wires.

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