@seanoj - a quick Amazon search shows 8ZULW-C as the model number for an 8 zone Rachio Gen 3. The -B is the Gen 2 and the non-dash is the Gen 1, with the leading number being the number of zones.
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@seanoj - a quick Amazon search shows 8ZULW-C as the model number for an 8 zone Rachio Gen 3. The -B is the Gen 2 and the non-dash is the Gen 1, with the leading number being the number of zones.