Description The IS electronic sounder has been approved for use in potentially explosive atmospheres for Group I (Mining) and Group II (Above Ground) applications and incorporates a high Ingress Protected IP66 enclosure. The sounder unit incorporates a Two stage alarm option and has a total of 32 selectable tones, selectable via a dip switch on the PCB and produces up to 105dB at 1 Meter. Connections are made to the base during the initial wiring phase which results in a faster more reliable installation. The sounder head simply twists and clicks into the pre-fixed base on commissioning avoiding any additional wiring and connections. Made in the UK
