Maximum Clamping Diameter 0.78" (20mm), bus bar 20x5mm Current Range 40Arms AC Measurement Range 0.5mA to 40A AC Output 6ft (2m) lead with proprietary CA connector Accuracy ±(5% R+ 2cts) typical Frequency Range 16 to 400Hz Operating Temperature -14° to +131°F (-10° to +55°C); 85% RH Storage Temperature -40° to +158°F (-40° to +70°C) Dimensions (HxWxD) 5.47 x 2.0 x 1.18 (139 x 51 x 30mm) Weight 6.5 oz (180g) Pollution Degree 2 Ingress Protection IP 40 EMC EN5008-1 Class B, EN 50082-2 Electrostatic discharge, IEC 1000-4-2 Safety Compliance 600V CAT III