Voltage Detector Alert Type Light Sound Built-In Flashlight No CAT Safety Rating CAT IV Display Type No Display Maximum AC Voltage Measured 1 000 V Testing Functions AC Voltage DC Voltage Features Lightweight Simply Hold Voltage Detector Adjacent to any Terminal or LED Along an Isolated Cable Using the Plastic Tip Power Source Battery Tester Type Voltage Detector/Tester Battery Size AAA Display Screen Type No Display Includes Batteries Yes