On 09/11/2019 11:06, Andy Burns wrote:

Harry Bloomfield wrote:

larkim wrote:

half hourly readings from the gas meter to the smart-enabled
electricity meter

Correct, except the gas meter updates the electric meter more
frequently than that.

My IHD certainly only receives gas readings every 30 minutes, whereas
the electricity readings are about every 15-20 seconds.

They may well be battery powered. My oil tank gauge is and it lasts
typically about 5 years on a custom stick of expensive AAA alkalines.

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Regards,
Martin Brown