-Scale: Bright red LED -Handle: Handy plastic housing with removable cap. Practical Clip. -Torque Transducer: Protected under the white tip, the sensor provides non-contact recognition of AC voltages within a field of 4 mm. -Standards : IEC 61010-1. -Measuring Category: CAT III 1,000 V AC. -2 AAA batteries (LR03) are inserted in the voltage tester.