Japanese-made 110 220V Voltage Regulator Converter

For sale, original Japanese voltage regulator (AVR) 🔹 Type: AUTO STAC 🔹 Model: ST500W4 🔹 Capacity: 500VA 🔹 Outputs: 110V / 220V 🔹 Made in: Japan (Nippon Keidenki Works Ltd.) 🔹 Equipped with protection fuse and voltage indicator. ✅ The unit operates efficiently (Fully Automatic AC Voltage Regulator). ✅ Protects your devices from electrical fluctuations. ✅ Suitable for sensitive equipment and electronics. 📦 Condition: New, unused (as clearly shown in pictures)