detector at the other end. Are they aligned?

Check wire from sensor too. This is to detect if there are people or something that could prevent door from coming all the way down. 

所有跟帖: 

第一个查的就是它。好像没问题呢 -Sunblue- 给 Sunblue 发送悄悄话 Sunblue 的博客首页 (0 bytes) () 01/31/2025 postreply 14:51:04

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