I'm new to this forum, and to data-logging.
I require to monitor KWh usage over a minimum of one month on several 240v single phase devices.(20 amp limit per device) I am able to fit sensors to the input leads of these and do not require connectivity to be wireless. Ideally I'd like 5 devices monitored but may well have to do with 3 (looking at available monitors). I'd prefer the logger to hold historical data to be downloaded to a PC, rather tan a permanent PC connection. I'm a retired engineer, requiring this for a hobby project so don't need an industrial/commercial quality device - as cost would be an issue! Hope you can advise me on best way forward.