UT18C can provide AC and DC voltage (including the three-phase alternating current) measurement phase of three-phase AC power indicator on-off test RCD Test single pen measurement (can determine the zero line or wire) self checking no battery detection and other functions Suitable for: smelting, electronics, manufacturing, defense, electric power, petroleum, chemical industry. More detailed product information, please refer to the English manual. UT18C can provide AC and DC voltage (including the three-phase alternating current) measurement phase of three-phase AC power indicator on-off test RCD Test single pen measurement (can determine the zero line or wire) self checking no battery detection and other functions Suitable for: smelting, electronics, manufacturing, defense, electric power, petroleum, chemical industry. More detailed product information, please refer to the English manual.