Indoor/Outdoor Humidex Thermometer

We plan activities around weather forecasts. However, the information is often from sensors far from our location. I want data from my backyard with the convenience of not having to go outside to read it. I have been using the wireless Indoor/Outdoor Humidex Thermometer for over two years. It is perfect for my needs. I have placed it in a central location in the house and I take a glance at the readings every time I pass it (at least ten times a day).

Setting it up is a snap. First insert two AA batteries into the back of the monitor and two more into the remote outside sensor. Press the reset button on both and you should begin receiving data which is displayed on the monitor. Look for a suitable place to locate the sensor. A shady area is recommended for accurate readings. The maximum transmission range is 45 meters but that is in open spaces. Walls will cut down on the separation distance. A signal detector icon indicates how strong the connection is between the two devices. Using this will help you find the best place to put each of the two gadgets. The remote sensor is splash proof but it should not be exposed to heavy rain. I have put mine under the eaves of my garage. The monitor can be mounted on a wall or placed on any flat surface.

This particular model is perfectly suited for cold Canadian weather. The remote temperature sensor is good for -50°C to 70°C (-58°F to 158°F). The main difference between this monitor and the competition is that this model provides decimal temperature readings, which is a rarity. A temperature of 16.6°C to 17.4°C would register as 17°C on most monitors. I appreciate this precision because I am sure I can tell the difference between these two readings. On the monitor there is a battery indicator icon, letting you know when the power is starting to go. The batteries should last about 12 months.

Besides the indoor/outdoor temperatures, the monitor also displays the outside humidity and a “Humidex” index to indicate how comfortable/uncomfortable the temperature really is outside. -- Marcel Dufresne

Thermor Bios Indoor/Outdoor Humidex Thermometer $32


  1. I have been interested in something like this for a long time, but I live in Winnipeg and with daytime highs during the winter barely cracking -15C(That’s 5F), I have a hard time trusting batteries to work very well in very cold weather.  I have used devices like petzl headlamps, cameras and GPS receivers in the bitter cold and most of the time you have to keep an extra set of batteries in your inside pocket to swap out to keep the device working.  I’d be impressed if this worked in spite of that though.

  2. Do you think you could use two sets of these in close proximity, or would the wireless signals interfere with each other? I’d like to have one of these in my basement and attic to monitor humidity and temp, as well as one for the main part of the house and outdoors.

    1. I have a unit with similar features and it allows multiple remote sensors so it might be possible. However mine does not take humidity readings from the remote sensors but rather the central unit. 

  3. Natch.  Like most items I attempt to purchase from it isn’t available to be shipped to Canada.  On, the same thing is three times the price and doesn’t ship for three weeks…  sigh.

  4. How long do the batteries last on the remote unit? I have an Oregon Scientific indoor/outdoor thermometer. The remote AA cells only lasted a month so I modded it to use D cells.

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