HM-944 Digital Soil Resistance Meter is purchased separately from the Resistivity Kit. There is no need to select ranges or adjust dials when using this meter. Resistance readings display instantly with the push of a button, or log them directly to a Bluetooth-enabled Windows™ PC or PDA device (not included) using the included ProCP Soil Resistivity software. Logged readings can be automatically date/time stamped with positioning when integrated with GPS feature in user’s handheld device. The HM-944 has a total range from 0.01 Ohms to 10 Mega-Ohms. Powered by conventional D-cell replaceable alkaline batteries. Rugged, weatherproof plastic case is IP67 rated and is12x10.5x5.8in (310x267x147mm), LxWxD.