KKmoon UNI-T UT651A Handheld Lamp Tester Detector Led Fluorescent Light Bulbs Tester With Flashlight it is an ideal tool for families, offices, schools and factories to test and repair the lamps. test low pressure sodium lamp, high pressure sodium (?110W), neon lamp, energy-saving lamp, electrodeless lamp, fluorescent lamp, mercury lamp Have the on-off function to test the working condition of different kinds of lamps. Have flashlight function to make it to be used in the dark. LED Alarm & Buzzer Alarm