When I first heard about Blue Maestro's Tempo Bluetooth Smart Thermometer (£29.00, or about US$48), it was shortly after I had a conversation with a new friend about creating such a device. Ron, who I met on a recent cruise vacation, had wondered aloud why there wasn't an accessory for the iPhone that would let you check the local temperature. While his idea was more like a plug-in dongle for an iPhone or iPad, I think Ron would be happy with the Tempo Bluetooth Smart Thermometer.
- Dimensions: 2.87" x 3.54" x 1.1" (73 x 90 x 28 mm)
- Weight: 3.4 oz. (96.38 gm) with batteries installed
- Connectivity: Bluetooth Smart (requires iPhone, 4S, iPhone 5, iPhones 5S and 5C and all later models of iPhone; iPad Mini, iPad 3 and all later models of iPad; iPod Touch 5th Generation and all later models of iPod Touch. iOS devices need to be running iOS 6, iOS 7 and later operating systems.)
- Material: Polycarbonate case with nonslip silicone feet
- Batteries: Two AA cells (lifetime of about one year)
- Colors: Blue, Green, Gray, White, Black
- Accuracy: +/- .2 degrees Celsius
- Range: -13 degrees/167 degrees Fahrenheit (-25 degrees/75 degrees Celsius)
- Usable distance: Up to 75 meters line of sight
For something that you're probably going to use around the house, the Tempo is quite attractive. It has a rounded triangular shape and looks more like a small art object than a temperature sensor. The three nonslip silicone feet ensure that you can place the Tempo on many surfaces -- even if they're not perfectly flat -- and it will stay in one place.
Tempo is waterproof, so if you want to use it as an outside temperature monitor it will work just fine. Note that the low end of the temperature range is -13 degrees Fahrenheit (-25 degrees Celsius), and that a lot of locations in North America got that cold this year...