World-class digital multimeter with advanced variable-frequency drive (VFD) filtering to help you accurately analyze non-traditional sine waves and noisy signals found in VFD-controlled equipment: VFD mode filters VFD signals and provides accurate voltage and frequency measurements during maintenance and troubleshooting - LoZ mode eliminates ghost voltage readings associated with long-run applications - Powerful work lights eliminate the need for a flashlight while performing tests in dim lighting - The data record feature captures electrical measurements and provides wireless data transfer - Integrated Bluetooth technology connects the FLIR device to the FLIR Tools Mobile app on your compatible mobile device.