2 x 1.5V AAA batteries and instructions. CM100 Flexible Current Meter. The CM100 is a clamp meter with a flexible current sensor capable of measuring true RMS AC current up to 3000A in 3 ranges (30A, 300A, 3000A). The flexible current sensor is beneficial for the measurement of different sizes and shapes of conductor which cannot be measured with a standard clamp meter. The flexible current meter is lightweight and simple to use with Min/Max Indication, Display Hold, Auto Power Off and Display Backlight. AC Current: 10mA to 3000A (in 3 ranges) Accuracy: 3.0%%%% of readgin + 5 digits (45 - 50Hz) Operating Environment: 0°C to 50°C <80%%%% RH, non condensing Pollution Degree: 2 Complies With: BS EN61010-1, BS E6101-2-032, CAT IV 600V, Class II Double Insulation Probe Cable Length: 18" (45.8cm) Probe Cable Diameter: 8.35 nominal Cable Length (probe to meter): 1.8m