The Efergy Elite Classic 4.0 energy monitor is the ideal simple electricity for your home . Very simple to set up and use and your energy use is shown simply on a very clear display. The Efergy Elite shows your "energy now" live electricity use in KW, cost and carbon footprint. The latest version also displays the time, humidity and temperature. In "history" mode you can discover how much electricity you have used for the each of the last 31 days, 53 weeks and 12 months. How much your electricity cost for those periods and how much co2 was produced to supply you with that electricity. For each time period you can also see how that compares to your average. For instance you may see that last week you used twice as much electric as usual. By looking through the days you can discover which days the consumption was so high, why so much electric was used and you can use this information to cut your energy bill The Efergy Elite is also compatible with the Efergy Engage Online monitoring system, so by adding an Engage Hub, you can view your data 24/7 via the internet How it works The Efergy Elite electricity monitor is simple to install and use. The sensor simply clips around the live cable feeding your meter. This is plugged into the transmitter which wirelessly sends the data about the electricity you are using to the monitor display. The monitor converts this into kilowatt-hours, the standard unit which the electricity company uses to charge you. You can input your own tariff details and you can then see how much you are spending in electricity instantly. Make instant changes to save money, energy and the environment. Features Easy to set up and use Portable compact display, can be placed anywhere in the home Understand your carbon footprint View your real time energy consumption (cost, CO2 and kWh) View historical daily, weekly or monthly data (cost, CO2 and kWh) View daily, weekly or monthly average (cost, CO2 and kWh) Select up to 4 tariff settings Audio Alert if you exceed your set maximum consumption target. Up to 70 m range Portable or wall mountable display 12 months minimum battery life (with 2400 mAh alkaline batteries) Mains or battery powered options for the display unit MICRO-GENERATION: The Elite Classic Wireless Electricity Monitor can be used to monitor micro-generation. The CT Sensor will read the current going through your feed cable and will tell you how much energy you are generating. Technical specifications Model Name: Efergy Elite Frequency: 433 MHz Transmission Time: 6sec. 12sec. or 18 sec. Transmission Range: 40m - 70m Sensor Voltage Range: 90V - 600V Measuring Current: 50mA - 200A Memory: 64K Pack Size HxWxD: 19.1cm x 20.5cm x 5cm Display Power: 3 x AA Batteries Transmitter Power: 3 X AA Batteries Box Contents 1 x Elite 4.0 portable display 1 x Transmitter 2 x XL CT Sensors 1 x Instructions manual (English & Spanish) Batteries not included