Pull cord to activate sound and light alarm signals. 24 hour monitoring of backup battery ensures system operates in the event of a power failure. Audible & Visual Alarm Battery Back-Up Test Switch IP20 Manual Reset Mains-Powered Test Facility

Professional Quality, long series manufactured from chrome vanadium steel hardened, tempered and chrome plated for corrosion protection. Ring ends are accurately broached with chamfered bi-hexagon profiles for easy nut location and are offset at 45°....