1. Easy to install, simple to use, no complicated steps2. Energy saving and environmental protection, stable performance3. Frequency range: 20-75Hz4. Voltage range: 60-500V AC5. Current range: 0-99.9A6. Accuracy: +/- 2%7. Ambient temperature: 0-50 degrees Celsius8. Hole size: 22mm9. Overall dimensions: about 2.8 x 5.1 x 2cmSpecification: Package Weight One Package Weight 0.07kgs / 0.14lb One Package Size 8cm * 4cm * 4cm / 3.15inch * 1.57inch * 1.57inch Qty per Carton 430 Carton Weight 26.50kgs / 58.42lb Carton Size 50cm * 38cm * 34cm / 19.69inch * 14.96inch * 13.39inch Loading Container 20GP: 412 cartons * 430 pcs = 177160 pcs 40HQ: 958 cartons * 430 pcs = 411940 pcs