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I've had one of these on my other Chamberlain garage door opener for 12 years. I just replaced my second opener with another Chamberlain and wanted to use a surge protector with it. The electronics in both old openers were destroyed by surges and/or close lightning strikes.
Verified purchase: Yes | Condition: New
My garage door motor was damaged twice by power surges. I've had no more problems after buying this product even though we continue to have local power outages. Works as described.
Verified purchase: Yes | Condition: New
Wiring diagram can be a little misleading, as it doesn't show a junction that is actually in the wire system for the safety sensors. Or alternately the junction is not shown on the door opener installation.
Verified purchase: Yes | Condition: New
It was a new sealed package and wires with all instructions.
Verified purchase: Yes | Condition: New
good lightning safety for garage opener
Verified purchase: Yes | Condition: New