For use in harsh environments where high temperatures, shock and vibration or high UV levels are anticipated, E2S has introduced the D range of alarm sounders and combined sounder/beacon warning signals.
Using the electronics of its A Series, the D range is housed in a robust, corrosion-resistant LM6 aluminium alloy enclosure, giving greater mechanical, temperature and UV protection than an equivalent plastic-bodied device. The D105 is rated at 112 dB @ 1m and the D112 at 117 dB @ 1m; both types are also available combined with a Xenon strobe or LED beacon to generate both an audible and visual alarm from a single unit.
A metal housing is said to offer far greater protection at elevated temperatures than a plastic enclosure and is especially suited to outdoor applications such as mining conveyors where high ambient temperatures and sustained vibration can be experienced.
Both units offer a choice of 45 different alarm tones, and with the option of activating a second and third tone via additional control cables, they are a signalling solution that offers the versatility of multiple tones from a single unit at a lower cost. The devices can operate from 12, 24 and 48 VDC as well as 115 and 230 VAC. A UL-approved version is also available.