Schneider Electric Harmony™ XB5R. Wireless, Batteryless Push Button Switches offer better control of your operations anytime, anywhere. Utilizing wireless technology, the Harmony XB5R wireless, batteryless push button is easy to install in both new and existing applications, such as bottling, packaging and conveying lines. By eliminating the need for wiring through the machine structure or cable tray to connect the push button to the electrical panel, the XB5R cuts installation costs by 20% as compared to traditional wired solutions. The batteryless solution offers permanent availability, benefits the environment and eliminates costly battery maintenance, re-charging and recycling. The Harmony™ XB5R switch is well-suited for harsh industrial environments, where added protection of your people and machines is paramount.