The Sennheiser NT 12-5 CW+ (article 508899) is a replacement or spare plug-in power supply for Sennheiser Evolution Wireless Digital (EW-D) EM receivers. It accepts universal mains input of 100 to 240 V AC and delivers 12 V DC, and it comes with interchangeable country plug adapters for the EU, US, UK, Korea, Australia and China, so a single part number covers kits used locally and on international tours. Sound engineers, rental companies, churches, schools and conference venues use it to replace a lost or damaged supply, or to keep a spare in the road case so a receiver is never left without power. Using Sennheiser's own supply ensures the correct voltage, polarity and connector for the receiver. The package contains the power supply, the country adapters and a user guide. It is covered by Sennheiser's two-year warranty. Check your receiver model before ordering, as other Sennheiser devices may require a different power supply; the Sennheiser product page files it under power supplies for wireless systems.