Intrinsically safe environments like this petrochemical plant -- you can't use RF, it may generate antenna sparks, but you can use light -- you see plenty of light there.
Brendesisht ne ambjente te sigurta si ky impjant naftembajtes -- ku nuk mund te perdoresh RF, mund te krijoje shkarkese eletrike ne antene , por mund te perdori driten-- sic e shikoni aty ka shume ndricim .