Why does the EXT-401 Explosion Proof Telephone require an external signal?


The nature of the EXT-401 explosion proof enclosure with its thick, sealed copper free aluminum walls makes it impractical to effectively transmit sound from the inside of the enclosure.

Guardian Telecom offers a variety of options including the CE20 line-powered ringer, configurations of the SR40 Speaker/Tone Ringer and hazardous area strobes.

Recent Posts
Contact Us

We're not around right now. But you can send us an email and we'll get back to you, asap.

Not readable? Change text. captcha txt

Start typing and press Enter to search products