The Megohmmeter Model 1040 is a battery powered digital insulation resistance tester. It is designed to measure insulation resistance, continuity, voltage and to measure resistance. The Model 1040 tests are 500 and 1000V. It incorporates a 600V voltmeter which automatically detects and accurately displays AC/DC voltages in the test circuit on each of the insulation test voltage ranges. Above 25V it also provides an audible and visual signal, and inhibits further tests, thus protecting the user and the meter. An exceptionally large digital/analog multi-function display provides clear and easy readings enhanced by a bright blue electroluminescent backlight. Insulation measurements to 2000Mohm (2Gohm). Automatic test inhibition if live sample is greater than 25V. Automatic discharge for operator safety. Resistance measurements to 400kohm. Continuity measurements with 200mA test current. Alarm indication. Over-molded slip-proof holster for rugged field use. Supplied with a soft carrying case and test leads. Applicable for followings: Motor insulation resistance measurements. Continuity checks. Low resistance measurement. Test industrial commercial wiring & motor control centers. Test motors (AC and DC). Test transformers. Dielectric Absorption Ratio and Polarization Index measurements. +/-3 Percent Accuracy. Dimensions: 8.31" x 4.26" x 2.36". Operating temperature range 14 to 131 degree F. Storage temperature range -40 to 158 degree F.