LisleLisle, computer safe circuit tester 530731 fits Universal 3-28V. Will not damage sensitive electronics. Draws less then 21 mA at 12V DC. Red light for positive and green light for negative polarity. Note: See 530732 for replacement bulb. Δείτε περισσότερα στον κατάλογο Workshop Home > Workshop > General Tools > Electrical > Circuit Testers > Lisle, computer safe circuit tester