This device was purchased to replace an extinct Omicron weather station which had failed after 15 years of good service. The Accur8 has a lot more features and has a clear, colour display. It's easy to set up and the external sensor has a strong signal from 20 metres away. Internal and external temperature readings appear to be very accurate as does the barometric pressure readings, the latter displayed as a digital reading and a 12 hour trend graph. Addional features such a moon phase and low-mid-high tide indicator are useful. Unlike my old device, the Accur8 is mains powered via a supplied plug transformer with AA battery back up, so needs to be located near a power supply. The bright display can easily be turned off if necessary. The remote sensor is battery powered and there is a battery strength indicator for the external sensor included in the main display. The device includes an alarm clock with snooze function which seems a bit unecessary and the instructions are adequate, though not as comprehensive as they might be. An additional feature is a weather forcaster (based on barometric pressure)which is a bit hit and miss and claims to be "70 - 75% accurate" which seems about right. It's a well made, easy to use device and represents very good value for money.