Greenlee CMT-90 Manuel D'instructions page 12

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Specifications
Display: 10,000-count LCD
Maximum Conductor Size: 33 mm (1.30")
Display update rate is 4 per second for voltage, 2 per second for resistance,
and 1 per second for current
Duty Cycle (voltage above 30 V):
30 seconds ON (maximum)
2 minutes OFF (minimum)
Automatic Power Off: After approximately 30 minutes
Temperature Coefficient: 0.2 x (Accuracy) per °C below 18 °C or above 28 °C
Measurement Categories: Category III, 1000 V, and Category IV, 600 V
Operating Conditions:
Temperature:
0 °C to 30 °C (32 °F to 86 °F), 0% to 80% relative humidity
30 °C to 40 °C (86 °F to 104 °F), 0% to 75% relative humidity
40 °C to 50 °C (104 °F to 122 °F), 0% to 45% 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 V battery (NEDA 1604, JIS 006P or IEC 6F22)
Battery Life: Approximately 250 hours with alkaline battery
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