Annually - and we send to be calibrated in two separate batches to ensure sufficient remaining in-house when the first batch is out.
We keep quite a few loggers as these also go into our HEMS boxes.
Annually - and we send to be calibrated in two separate batches to ensure sufficient remaining in-house when the first batch is out.
We keep quite a few loggers as these also go into our HEMS boxes.
Last edited by Rashmi; 28th Oct 2020 at 11:59 AM. Reason: ,,
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