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Frequently Asked Questions


What does Explosion Proof mean?, How long is the Warranty Period? Are there other methods of telephone signalling to deal with a high noise environment?… These are just a few of the questions that have been commonly asked.

In the FAQ section you can look up Frequently asked Questions and the Answers to them. Feel free to contact us if you can’t find what you are looking for and we will get back to you with an answer as soon as possible. Use the online form to the left or click on Contact Guardian to open the Contact web page.