WINSTA® MIDI 3-pin mounting material The installation material from the WINSTA® MIDI product family enables smooth installation. WAGO's WINSTA® product family is complemented by a wide range of accessories. The WINSTA® MIDI connector system with push-in CAGE CLAMP® spring connection technology is synonymous with conscientious electrification. Thanks to the built-in test port, connections can even be checked when connected. This saves time and reduces installation work.