Autronica manual call point with SelfVerify function. Weather proof, without glass. Approved for use in hazardous areas zone 0, 1 or 2. For use in harsh environmental conditions. Up to 2 x M20 cable glands. The BF-501/EX is a manual call point for use in hazardous area zone 0, 1 or 2. It must be connected to the approved AutroSafe barrier BZ-500. The call point has been designed for use with Autronica's interactive fire alarm system AutroSafe and consists of a SelfVerify function. This function ensures the highest grade of reliability and the lowest degree of manual testing, because all units comprising this function are automatically self-tested once every 24 hours. The high IP degree and mechanical strength of the enclosure makes the call point suitable for outdoor applications in industrial, maritime and off-shore installations. The BF-501/EX must be installed according to local regulations which normally means along escape routes, landings and exits.