Blue Maestro Pebble Environment Monitor and Data Logger for iOS and Android - White Pebble Environment Monitor is a Bluetooth Low Energy environment monitor, beacon and data logger that measures and logs temperature, humidity, barometric pressure and dew point. It is accurate and powerful enough to be used for commercial purposes while also being attractive and easy to use for domestic applications. It is made out of robust and attractive polycarbonate that is weather resistant, IP65 and can be placed outdoors. It includes an on off button and rubber feet so that it can be placed on rough surfaces. It has a range of up to 75 meters or 245 feet line of sight. It is powered by 2 AA batteries that are included and can easily be changed. Apps for iOS and Android allow you to read the current values for temperature, humidity, barometric pressure and dew point as well as download the historic data to your smartphone. From there you can view the history as a table list or in a graph form. You can also email the data in a PDF or CSV format for further analysis. Tempo uses the nRF52 Bluetooth Smart system on chip from Nordic Semiconductor. Powered by 2 AA batteries, included and replaceable, with excess of 5 years battery life