Precision temperature, humidity, and light level sensors measure temperature in Celcius and Farenheit, relative humidity % and light level in lux. * Relays information to Bluetooth 4.0 SMART Ready devices such as iPhone 4S/5/5C/5S and certain Android phones and tablets with up to 100ft range * Acts as a datalogger when no smartphone or tablet in range and records information periodically for up to a month at a time. * Runs for 1-3 years on a single battery (user changeable) and weather resistent * Integrates with Wimoto Cloud Cube for real-time, always-on updates via the Internet