Autronica manual call point, weather proof, without glass. With SelfVerify function. For use in harsh environmental conditions. Up to 2 x M20 cable glands. The BF-501 is a manual call point for use in harsh environmental conditions. The call point has been designed for use with Autronica's interactive fire alarm system, AutroSafe, and comprises the SelfVerify function. This function ensures the highest grade of reliability and lowest degree of manual testing, because all units which consisting of this function are automatically self-tested once every 24 hours. The high IP degree and mechanical strength of the enclosure make the call point suitable for outdoor applications in industrial, maritime and offshore installations. The BF-501 must be installed according to local regulations, which normally means along escape routes, landings and exits.