Suggested by my electric garage door company to prevent power surge after a power surge damaged one of my openers.

and it's supposed to cut the power if a massive power surge damages it.

It is a very safe way to protect a valuable piece of electronic equipment from surge damage.

This will protect my current opener for surge damage in the future.

This device has three MOVS providing 3-way protection, a MOV between H-N, but also between hot and ground (H-G) and neutral land ground (N-G).

This device has three MOVS providing 3-way protection, a MOV between H-N, but also between hot and ground (H-G) and neutral land ground (N-G).

Protects my treadmill (I hope), and works as it should (I hope).

Useful at home but would not recommend it for traveling as it is large and crowds other plugs in receptacle.

Using it for nearly a year so far to protect a

Would buy it again, hope it works as it is supposed to

Protects my treadmill (I hope), and works as it should (I hope).

Useful at home but would not recommend it for traveling as it is large and crowds other plugs in receptacle.

Using it for nearly a year so far to protect a

Would buy it again, hope it works as it is supposed to

This device has three MOVS providing 3-way protection, a MOV between H-N, but also between hot and ground (H-G) and neutral land ground (N-G).

This device has three MOVS providing 3-way protection, a MOV between H-N, but also between hot and ground (H-G) and neutral land ground (N-G).