Wattson Additional Sensor

Best Offers

1. Nigel's Eco Store £15.94 PICK

Your new Wattson is supplied with one sensor clip for use with standard domestic supplies. If you intend to use Wattson to monitor a three-phase supply, you'll need to purchase two extra sensors.

Monitoring a modern Economy 7 system should not need any additional sensors; you use the Holmes software to configure Wattson to take into account the lower night-time tariff. If you have an older style Economy 7 installation (where the electricty meter has three wires coming out from the bottom) you'll need one extra sensor to clip onto the second live output which runs the night-time only circuits in your home.