Secware2 Posted May 14, 2020 Share Posted May 14, 2020 What is the difference between Grade2 & Grade3 Sounders Quote Link to comment Share on other sites More sharing options...
Secware_Tech6 Posted May 15, 2020 Share Posted May 15, 2020 Lots grade 3 is designed as a product standard but it's mainly part of a system standard. While a grade 3 product is better than a grade 2 product there is little between them. Yes a grade 3 product is better than a grade 2 but the system design is more important than just product choice based on grade. There is grade 3 compliant equipment I would never use on a. Install. Does that help? Quote Link to comment Share on other sites More sharing options...
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