avk1994 posts

17-November-2021 Wednesday
Help with RS-422

Amateur Radio League

Radio electronics Repair of equipment Weakness Sowe

22-March-2021 Monday
Draining condensate from a dry fire pipeline

League of Weak Volunteers

Condensate Fire protection system Sprinkler

13-March-2021 Saturday
Maintenance of sprinkler system valves

League of Weak Volunteers

Fire alarm Fire protection system Maintenance

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