What does 51 mean on my AlertMaxx2/Rego1? Aaron White 23 October 2019 07:45 Follow '51' is actually an 'S1' code. Click here for more information. Related articles What does S1 mean and how do I reset it? What is remote monitoring and SideWinder Tech? I have a P1 on my AlertMaxx2/Rego1, how do I mute it? Dual V4/V6 O&M Comments 0 comments Please sign in to leave a comment.
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