In Pictures: 10 cool Bluetooth devices for your iP...
Available in five colors, Blue Maestro's £29 Tempo thermometers are like none you've ever seen. You place the water-resistant devices wherever you want to monitor the temperature, and they transmit the last 24 hours of temperatures to your iOS or Android smartphone. The apps can be used to set alerts, such as to tell you when a temperature drop means it's time to bring in sensitive plants or keep your pets inside.
In Pictures: 10 cool Bluetooth devices for your iPhone or Android