The rugged, full-featured Extech MM750W Wireless Datalogging Multimeter has 14 functions and includes a non-contact AC Voltage detector and Type K Temperature measurements. The CAT IV safety rating provides protection in industrial environments. Using the wireless feature, Bluetooth Datalogging Module (included), and the free ExView W-Series App, you can transmit readings in real-time to your smart devices. This allow you to view critical electrical readings from a safe distance or more convenient location. Other features include a datalogger (15,000 readings) for wireless data transfer. This allows you to generate reports, analyze data, add notes and readings to photos (taken from your smart device camera), and use your smart device as a 2nd display for easy viewing or sharing. Smart meters eliminate the need for clipboards/notepads on the job!