E2S, the specialist manufacturer of audible and visual warning devices for use in hazardous areas and hostile industrial environments, has announced a major extension to the capability of the EEx d versions of its BEx family of Explosion Proof beacons and its MB Series of Marine beacons. The light source in both families can now be specified as an array of high intensity LEDs rather than the traditional Xenon tube, a change that enables nine different modes of operation to be specified. With versions using both technologies now available, users can specify the best option for the installation. The BEx versions are approved to IECEx, InMetro and GOST R.