Voltage Detector Alert Type Light Built-In Flashlight Yes CAT Safety Rating CAT IV 1000V Display Type No Display Maximum AC Voltage Measured 1 000 V Non-Contact Yes Test Connection Type Probe Tip Features Bi-Color LED Verifies Tester is on and Range Selected Red LED and Beeper Indicates Voltage is Detected Waterproof and Dust Tight Housing Southwire Pen Style Voltage Tester Power Source Battery Tester Type Voltage Detector/Tester Battery Size AAA Calibration Frequency 50 to 60 Hz