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We have a Hangar with a remote building, in a bad weather area, using a few Cresnet keypads.? Looking for an alternative to the CSP-LSP to help guard against lighting strikes and power surge.? Wondering if anyone has found anything or had any success with an alternative device?

-Todd

How about an opto-isolator?

https://www.advantech.com/en/products/ffdc0bc1-8004-4a4b-af01-0e56dbedf0fd/bb-485op/mod_73cf635a-ca7c-4354-b249-e649d450f134

And I would even plug that little box into a Surge-X SA-82

Take a look at TPD

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Forgot about TPD....yep that's good stuff too....

Thanks, Rob, that's perfect ;-)

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Appreciate the link!? we looked into these as well