EXD Buzzer The Exd Buzzer is an explosion proof buzzer designed for use in hazardous areas where a distinctive signal is required. Certified to ATEX II 2G Exd e IIC T6, it is suitable for use in Zone 1 and Zone 2 areas. Producing a tone with low frequency, it cuts through background noise more effectively than many other devices of a similar output. Mounted in a rugged reinforced polyester case and weatherproof to IP66, it is suitable for use in the most arduous conditions. Applications - General signalling; evacuation and process control alarm Rated for Category 2 use (formerly Zone 1 & 2) ATEX approved II 2G Exd e IIC T6 Heavy duty buzzer Weatherproof to IP66 Rugged construction Audibility (tone) at 1m (typical) Current (tone dependent) Construction: Glass Fibre Reinforced Polyester Signalling Solutions