Thermor BIOS Weather 312BC Wireless Indoor/Outdoor Thermometer and Indoor Hygrometer

We keep our a/c bill down by opening up all the windows and doors early in the morning. We watch the indoor and outdoor temperature so that we know when it is time to close up. At night, once the outdoor temperature goes down we open up again. This thermometer has made it very easy to keep track of both indoor and outdoor temps. When I received it, I checked it against a thermometer I know is accurate, and this unit was perfect. It is a plus that the button on top lights up the display for viewing if the room is dark.

I like it, it does the job very well, accurate. My only complaint is battery life. I only get a few days on rechargables, they could have put a power connector and made it better. I only use rechargeable on the unit that goes inside the house the outside unit uses regular alkaline batteries and I have not replaced those yet. But it's very nice. Screen is bright and it has a light if you need to see it at night. I have to replace the batteries enough that I don't worry about setting the clock. I use rechargeable for cost. There was a review about setting the inside and outside units near each other for a few hours before setting them up, inside the unit that goes outside there is a button with tx above it. Feel free to press it and your inside unit have the same information as the outside unit.

I rarely write negative reviews but feel compelled to say a few comments on this thermometer . I initially liked the light up button feature. It made the devise easy to read. Recently the screen has started to fade in and out. I realize this was not an expensive thermometer but expected it to work for more than 6 months. I'm changing brands and will spend more for hopefully a better unit . Save your money, buy another brand.

Does everytrhing it claims to do. I gave it 5 stars not so much because of its quality (very good) but because of the customer service backing it. I bought this unit because it was the only one which advertised extra senders. I wanted to replace a Radio Shack model which originally had 3 senders but 2 (1 inside & 1 outside ones) had died on me. I like to monitor my upstairs bedroom and my basement office as well as outside. When I asked Amazon how to order additional senders, they said they only sold the base (& outside unit) and not additional senders. When I received the unit, I found that the manufacturer was Thermor Ltd.in Newmarket, Ontario, Canada. I found their website at [...] but the senders were not shown or listed. I called the contact number (1-800-387-8520) and spoke to Lauren Campbell (ext 6108)who got the part number for me (312TX) and price ($5 ea.) and I emailed her my credit card information and an order for 3 units (one for a spare). Two weeks later, not having heard anything, I emailed her again and, less than 2 hours later, got the following response, "I apologize for the delay- we were waiting for the product to arrive. Because it has taken longer than expected, we will have these 3 units sent out to you at no charge." and she did. They arrived 1 week later. That's Quality Service! BTW I've had no trouble receiving any of the 3 sensors placed on 3 levels of my house which all corresponded to the base unit within 5 minutes of having the batteries inserted. If you place the unit next to the base while inserting the battery, the sync time is very short. My experience leads me to believe that if you have had a bad experience with this unit, Thermor wouild do whatever necessary to make it right.

Cannot read the measurements for temperature or humidity.......vague and unless you hold or place the unit just so, it is unreadable and therefore useless. I would like to return it but apparently I have gone beyond the one month window of return. Unhappy!It was easy to set up and the outdoor gauge is easy to read......but as I said...unusable.

Works pretty well, the transmitter for the outdoor temperature disconnects pretty frequently, I can't figure out why.

This device is accurate and inexpensive. I look at it every morning before I get up for the outdoor temp. It also let me know when I needed to turn on the humidifier for the night. I would highly recommend this product.

Works great, excellent price. Need to purchase 2 more..