LED synchroscope
LS-110 SYNC (110V, 120V, 220V, 230V, 240V) - Standard Electric Works Co., Ltd (SEW)
• Input Voltage : 110V AC, 120V AC, 220V AC, 230V AC or 240V AC.• Standard 4.5-inch switchboard case.• Front panel mount.• 3 bi-colored LED indicators for "SYNC", "GEN" and "BUS".• 24 LEDs in a circle display the phase angle and the frequency differences between 2 networks.• 360° LED indication.• 12 o'clock position LED is bi-colored.