Patented TwistGuard" extendable tip shroud meets the highest electrical safety requirements to reduce tip exposure while providing the versatility needed for most measurements Ratings: CAT II 1000 V, CAT III 1000 V, CAT IV 600 V, 10 A max., Pollution Degree 2 Probes always show correct category rating for tip being used Environmental ratings: -20 "C to 55 "C (-4 "F to 131 "F), altitude: 2000 m (6,562 ft) Conforms to EN61010-031