Before you buy.

Five checks to make sure the MeterWatch sensor suits your meter and your home.

What the sensor measures

Your meter has a small light that flashes as you use electricity. The sensor sits over that light and counts the flashes. MeterWatch turns the count into kilowatt-hours (kWh) using the imp/kWh number printed on your meter, then shows your usage in the app.

How it works: the meter's pulse light flashes, the sensor head counts the flashes, the main unit sends readings over Wi-Fi, and the app shows your usage

From the flashing light on your meter to your phone.

The sensor measures usage. It doesn't read your balance. The balance in the app is calculated from the units you enter and the usage the sensor measures. See the FAQ.

What you need

Installation doesn't open or change your meter. The sensor attaches to the outside, over the pulse light.

What's in the box

Optional extras

See current prices in the shop.

Ready?

Not sure your meter is supported? Send a clear photo of the whole meter and we'll tell you before you buy.