Voltage Detector, Alert Type Light, Sound, Built-In Flashlight No, CAT Safety Rating CAT IV 1000V, Display Type No Display, Maximum AC Voltage Measured 1,000 V, Non-Contact Yes, Testing Functions AC Voltage, DC Voltage, Features Compact and Lightweight Design with Built-In Pocket Clip Allows You to Carry It on the Go, Optional Silent Mode for Use in Quiet Areas, Power Source Battery, Tester Type Non-Contact Voltage Detector/Tester, Auto Power Off Yes, Battery Size AAA WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov -