â·ÃÊͺ¶ÒÁÃÒ¤Ò à¤Ã×èͧµÃǨÇÑ´ÅӴѺà¿Ê Phase Sequence Tester à¤Ã×èͧµÃǨÇÑ´ÅӴѺà¿Ê > PRT200: Non-Contact Phase Sequence Tester PRT200: Non-Contact Phase Sequence Tester Tests up to 1000VAC with visual/audible indication Features: 75 to 1000VAC input voltage with 45 to 65Hz frequency range LEDs indicate phase orientation (clockwise or counter-clockwise) and whether each phase is live Beeper sounds intermittently when correct phase is detected and continuously if phase is reversed Durable housing with back cover magnet for attachment to an AC distribution panel for easy measurement Adjustable Hi/Lo LED brightness switch for making measurements in dimly lit areas or sunlight Fully insulated alligator clips with wide jaws Low battery warning Complete with three built-in 30" test leads with large color-coded alligator clips, four AA batteries, and pouch case For complete specs please download the product datasheet (not available for some accessories) Extech Phase Sequence Tester PRT200 à¤Ã×èͧµÃǨÇÑ´ÅӴѺà¿Ê