These D-Fi USB 2 X4 Wireless DMX Transceivers are perfect for lighting professionals looking to simplify their setup. Whether you're at a small event or a large venue, these transceivers make it easy to create a wireless lighting system. The finger-sized transceivers provide instant wireless communication, and with no dipswitches, channel selection is a breeze. They transfer DMX/ILS and master/slave signals between fixtures. Measuring 3.2 x 0.9 x 0.55 in (81.5 x 25 x 14.2 mm) and weighing 0.7 oz (20 g), they're small and lightweight. They operate on 5 VDC, with an operating frequency of 2.412 to 2.484 GHz, an RF output of 12.72 dBm, and a max unobstructed distance of 165 ft (50 m). They're fully FCC/RED compliant and CE, UKCA, RoHS approved.