Autronica manual call point, with SelfVerify function and LED indication. The BF-300 is a manual call point for indoor use. The call point is designed for use with Autronica's interactive fire alarm system called AutroSafe, and comprisesof the 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 BF-300 must be installed according to local regulations, which normally means along escape routes, landings and exits. IP44.