Main features
◼︎ One unit can monitor voltage imbalance, phase sequence, and under phase of three-phase 3-wire or 4-wire power supplies
◼︎ Switch settings for 3-phase or 3-wire or 4-wire power supplies ◼︎ 1 SPDT output relay, 6A at 250VAC (resistive load) ◼︎ 1 unit supports power specifications from around the world (switchable) ◼︎ Convenient monitoring of relay alarm status using LED indicators