Temperature - Humidity Sensor

[Skispcs]

I would like to see a simple and inexpensive Temperature / Humidity Sensor.
The first use case I have for one is the crawl Space of the house which houses the water pressure tank.

In the Winter if it gets too cold I would like to turn on a heater or something to protect the water tank and lines from freezing.

In the summer I would like to monitor humidity and ventilate the space if the humidity gets too high to prevent mold.

[stusviews]

You can use an Insteon wireless thermostat, 2441ZTH, to monitor the crawl space. With an Insteon manager such as the ISY or software, you can automatically control a heater or ventilator based on temperature or humidity. The Insteon Hub does not have that capability.

[smokegrub]

While the 2441zth is an option, I have found it the least reliable of all my Insteon devices. Moreover, the application being suggested does not require all the features of the 2441zth. A much simpler and less expensive device that only measures and reports temperature and humidity would have broad application. For example, attics, crawl spaces, remote properties, refrigerators/freezers?, etc. Available in two models, battery and AC, I would be one of the first in line.

[TheKing]

Put me down as second in line behind you to purchase this type of device. They make a very popular water sensor and it seems like templating from that for temp and humidity would be ideal. I am currently monitoring temps via a I/O bridge device (https://iobridge.com) and Thingspeak (https://thingspeak.com). Unfortunately the I/O bridge device is no longer sold/supported. It could be replaced via Arduino board but I would prefer an easier seamless Insteon solution.