Power Probe PPH1 The Hook Ultimate Circuit Tester with Smart Tip Read live current and resistance. Voltmeter - Positive & Negative Voltage Indicator Adjustable amp loads Computer safe Test relays Adjustable electronic Circuit Breaker Power Probe hook is a fast and efficient electrical testing tool designed for the modern automotive technician Hot shot mode - load tests power and ground connections and gives you a quick pass or fail result Can be adjusted and set from 2 ampere to 65 ampere Lets you work in sensitive circuits to heavy loads with confidence Will allow you to test multi-pole relay contacts while you simultaneously measure the coil resistance