KKmoon UNI-T UT651B Handheld Lamp Tester Detector Led Light Bulbs Tester With Extended Antenna & Flashlight Can test quickly different kinds of lamps like low pressure sodium lamp, high pressure sodium etc. UT651B has whip antenna itself, makes it available to test the lamp without tearing down the modulator tube. Have flashlight function to make it to be used in the dark Have the on-off function to test the working condition of different kinds of lamps. Flashlight/LED Alarm/Buzzer Alarm