The Sennheiser NT 5-20 UCW (article 508996) is the plug-in switching power supply for Sennheiser's L 70 USB charger, the charger used for BA 70 lithium-ion battery packs in Evolution Wireless Digital (EW-D) SK bodypack and SKM-S handheld transmitters. It is the same power supply supplied in the EW-D Charging Set and is sold separately as a spare, as a replacement, or to run an additional L 70 charger. Its label, read directly from Sennheiser's product photo, specifies an input of 100 - 240 V AC, 50 - 60 Hz, 0.3 A and a regulated output of 5.0 V DC at up to 2.0 A (10 W maximum). Power is delivered over a fixed cable ending in a USB Type-C plug, and the unit comes with interchangeable mains plug adapters so it can be used in different countries. Sennheiser lists the product weight as 220 g. Typical users are rental houses, theatres, churches and conference venues that keep banks of EW-D transmitters charged between events.