Audible warning and LED status indication combined in a single compact device – EAO has expanded its globally recognised Series 57 to include another innovative product in the form of the multi-tone warning indicator.
Safety has absolute priority when it comes to opening and closing doors in public transportation. This also has an impact on accessibility issues – whether for facilitating passenger entry on trains, trams, bus or for public use emergency call and call-for-aid systems. Users can depend on both the audible and the visual warnings provided by the Series 57 multitone warning indicators (MTWI).
The Series 57 MTWI uniquely combines two rail industry established HMI functions into one singular compact device – the Series 56 multi-tone sound module and the Series 57 warning indicator. This provides additional advantages and enhances safety in public transportation, especially for people with visual impairments. Passengers are intuitively warned about potential dangers thanks to the loud, audible warning signal and the LED status indicator visible from any angle.
When the train door is opened, green LEDs steadily illuminate or flash (must be controlled externally). At the same time, the door opening audio signal will sound to provide an additional acoustic warning. As soon as the door closes, the red LEDs illuminate (or flash) and the “door closing” signal can be heard clearly. Choices in LED colours and combinations are available and can be tailored to meet the specific application requirements (e. g. TSI PRM). Additionally, for emergency call system announcements, a passive speaker module variation is available that can be connected to an external signal source and amplifier.
Public transportation operators and door system providers benefit from attractive total costs of ownership (TCO), reliable LED technology and a long service life for the device. The combination of two HMI functions in a single device allows for space, time and cost savings when mounting it with only one required cable connection. The multi-tone warning indicator also requires fewer drill holes than would be necessary with two separate HMIs.
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