Features 1、LCD voltage and frequency display 2、AC/DC measured up to 690V 3、To judge the zero or live wire by single test pen measurement 4、Indicate the phase relationships among three-phase AC 5、Low-battery voltage indication and measured voltage over range indication Specification This voltage continuity tester has such functions as AC/DC (including three-phase alternating current) voltage measurement, three-phase AC phase indication, frequency measurement, RCD test, continuity test, single test pen testing, etc. Feature: LCD voltage and frequency display. AC/DC measured up to 690V. To judge the zero or live wire by single test pen measurement. Indicate the phase relationships among three-phase AC. Low-battery voltage indication and measured voltage over range indication. Suitable for household, factory, electric power department, etc. Specification: Brand: UNI-T Model: UT18C Auto Range: Yes High Voltage Indication Range: 713~788V Auto standby Current: <10uA LCD Indication(Voltage): 6V~690V, ±(1.5%+5) LCD Indication(Frequency): 40Hz~400Hz, ±(3%+5) RCD Test: Voltage: 230V, Frequency: 50Hz~400Hz Phase Rotation Test: 570~400VAC (3phase) Single Lead (L2) Detection: Voltage:100V~690V, Frequency: 50Hz~400Hz Self-inspection: LED, LCD No Battery Detection: Voltage Range:50VAC/120VDC~690VDC/AC Polarity Detection: Positive & Negative Low Battery Indication: Voltage:23V~25V Silent Mode: Yes Work Light: Yes Continuity Test: Resistance:0~100kohm Battery: 2pcs * 1.5V AAA Battery (NOT Included) LCD Size: Approx. 28 * 14mm Color: Red + Grey Product Size: Approx. 272*85*31mm/10.7*3.3*1.2inch Weight: Approx. 404g / 14.3oz Voltage Indication Range Accuracy 6V 12V 8V±1V 24V 18V±2V 50V 38V±4V 120V 94V±8V 230V 180V±14V 400V 325V±15V 690V 562V±24V Package List: 1 x Voltage & Continuity Tester Package List