The Klein Tools MM400 is an outstanding auto - ranging digital multimeter. It comes with an array of essential accessories, including (1) test leads, (2) AAA batteries, and (1) thermocouple with an adapter. This multimeter is a powerhouse of functionality. It can measure up to 600V AC/DC voltage, 10A AC/DC current, and 40M resistance. Moreover, it can gauge temperature, capacitance, frequency, and duty - cycle, and test diodes and continuity. With a CAT III 600V safety rating, it's built tough to endure a 3.3 - foot (1 m) drop and handle daily wear and tear at job sites. It features a low - battery indicator and an easily accessible battery compartment. Ideal for basic and controlled electromagnetic environments like residential, business, and light - industrial locations, it also includes test leads, a thermocouple with adapter, batteries, and a user manual. Specs include 2 x AAA batteries, 3.3' (1 m) drop protection, a 4000 - count LCD display. It can measure up to 600V AC/DC voltage, 10A AC/DC current, and 40M resistance, with a frequency range of 1Hz - 50KHz, 200µF capacitance, and 40MO ohms resistance. It's CAT III 600V standard and CE - certified, with a temperature range of 0° - 1000°F (-18° - 538°C). Measuring 6.00' (15.2 cm) in length, 1.78' (4.5 cm) in height, and 3.16' (8 cm) in width, and weighing 8.2 oz (231 g). Klein Tools' Test and Measurement line was designed by electricians for electricians, packed with time - saving features.
Using the Klein Tools MM400 is quite straightforward. First, insert the 2 AAA batteries into the easily accessible battery compartment. Then, connect the test leads to the appropriate ports on the multimeter. To measure voltage, current, or resistance, simply set the dial to the corresponding function. If you want to measure temperature, attach the thermocouple with the adapter. When using it, always make sure you're in a suitable electromagnetic environment like a residential, business, or light - industrial location. Be careful not to drop the multimeter as it can only withstand a 3.3 - foot (1 m) drop. Also, keep an eye on the low - battery indicator and replace the batteries when needed. For maintenance, store it in a dry and clean place. After each use, remove the test leads and the thermocouple, and put them back in a safe place. Refer to the user manual for more detailed instructions and troubleshooting tips.
