# Safety realys for use in high altitudes

**URL:** <https://forumautomation.com/t/safety-realys-for-use-in-high-altitudes/2275>\
**Category:** Electrical\
**Created:** [September 5, 2017, 6:44pm UTC](https://forumautomation.com/t/safety-realys-for-use-in-high-altitudes/2275 "2017-09-05T18:44:18Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Okal](https://forumautomation.com/letter_avatar_proxy/v4/letter/o/b3f665/32.png) [@Okal](https://forumautomation.com/u/Okal)\
**Post date:** [September 5, 2017, 6:44pm UTC](https://forumautomation.com/t/safety-realys-for-use-in-high-altitudes/2275/1 "2017-09-05T18:44:18Z")

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Does anybody know any Safety relay (for connection of Emergency stop), taht is certified for use in high altitude, for example 4.000m.?