Fluke LVD2 Non-Contact Voltage Tester. LVD2 volt light, offered by Fluke combines a non-contact AC voltage detector and LED flashlight into one easy to use pen-style design. It features dual sensitivity detection, turning blue from 1” to 5” (2.54 cm to 12.7 cm) from the source and red when at the source. The LVD2 is a CAT IV 600 V rated and is suitable for commercial and industrial applications.