У вашего броузера проблема в совместимости с HTML5
http://www.superbrightleds.com/moreinfo/dmx-decoders/5-amp-4-channel-digital-led-dmx-controllerdecoder/1869/
4 Channel DMX Controller/Decoder can control up to 4 different 12VDC LED products or any RGB LED Light Bar or Strip. Controller can run in stand alone mode using Address code switches. DMX decoding driver converts universal DMX512/1990 digital signal to PWM signal, which can be controlled by DMX512 console with 16-bit gray scale output per channel. Maximum load is 5 Amps per channel - 20 Amps total.