Industrial digital multimeter UT197 A high-precision portable true RMS digital multimeter from UNI-T with 600,000 counts and IP67 protection. The device can withstand a drop from max. 5 meters. With a wide operating temperature range (-40°C~55°C), the UT197 multimeter meets user requirements for measurements in humid, sandy, cold and other harsh, extreme environments. It can be used in the following occasions or areas: