Textron Company GREENLEE CM-600 Manuel D'instructions page 12

Specifications
Display: 3-1/2-digit LCD (1999 maximum reading)
Sampling Rate: 4 per second
Jaw Opening: 35 mm (1.38")
Maximum Conductor Diameter: 33 mm (1.30")
Measurement Category: Category III, 600 V
Temperature Coefficient: 0.2 x (specified accuracy) per °C below 18 °C or above 28 °C
Operating Conditions: 0 °C to 45 °C (32 °F to 113 °F), 0% to 75% relative humidity
Altitude: 2000 m (6500') maximum
Indoor use only
Storage Conditions: -20 °C to 60 °C (-4 °F to 140° F), 0% to 80% relative humidity
Remove battery
Pollution Degree: 2
Battery: 9-Volt battery (NEDA 1604, JIS 006P or IEC 6LF22)
12