The IS sounder is ideal for use as fault indication or process alarm in control panels located in intrinsically safe environments. It produces a 100dB(A) at 1m continuous 2600Hz tone that can be pulsed externally to produce different signals.

To reinforce the audible warning signal, E2S also offers the intrinsically safe IS-pB1 panel lights. The high efficiency LEDs, which are mounted behind red, amber, green, blue or clear lenses, have a typical operating life in excess of ten years. Powered via Zener barriers or galvanic isolators, the panel mount sounder and lights produce reliable and cost-effective status indications with minimum power consumption.

The E2S IS range also includes the IS-mini sounder, beacon and combined units as well as the IS-L101L LED beacon and the IS-A105N sounder, which are approved to ATEX, IECEx and FM.