There are five buttons: Menu (also Left), Down, Up, Enter (also Right), and an envelope button which lets you access the last received message.

As mentioned earlier the four main buttons on the display are Select, Readings/Costs, Usage and Emissions:

Select: Select switches between Gas and Electricity modes indicated by a light bulb icon and a flame icon. Be default gas mode shows the cost today based on kilowatt hours (kWh) whilst the electricity mode displays the kilowatt usage (kW) and pence per hour.

Readings/Costs: switches the primary display for each mode to include Cost Yesterday (costs for yesterday, last 7 days, and last 28 days – “For Illustration Only”),  Rate Now (in pence per kWh) which also displays the current meter reading, and Cost now (the default display).

Usage:  switches between Now (default display), Usage Today (in kWh with a bar graph for usage), Usage over 7 days (in kWh with a 7 day bar graph), Usage over 28 days (in kWh with a matching bar graph), and Usage over 12 months.

Emissions: shows CO2 emissions and can show gas, electricity separately or combined. The Each button press cycles between displays of Greenhouse gas in kg and kg/h, and emissions over the last 7 days, 28 days, and 12 months (in kg).

The menu system, activated by the buttons at the bottom of the display, don’t really need access as they will likely be pre-configured by the engineer but essentially they consist of three options: 1. Set-Up, 2. System Info, and 3. Usage Alarm.  When navigating the menu use the arrow indicators – left arrow (also Menu) steps back through the options.

Option 1 “Set-Up” allows the setting of “Buzzer Options” which is really the beep of the keypad,  “Light Options” toggles the traffic light display and sets the brightness of the traffic lights, and “Enter bind PIN” which the engineer said shouldn’t be touched.

Option 2 “System Info” shows the serial numbers for the electricity and gas meters that are attached to the particular in-home display unit.

Option 3 “Usage Alarm” allows a cost per hour value to be set for the electricity. When the usage exceeds this limit an alarm will sound. This option can be disabled by setting the value to zero.

The In-Home Display provides a lot of information but is largely concerned with kWh, kW, and kg/h so we will talk about what these values mean in a future article together with how we obtain this information online.