Product description: brand new high quality Made of high-quality materials for durability A non-intrusive current transformer, build your energy monitor with this sensor clip. Optional specifications: 20/30/50/100A Model: SCT-013-020 Reference project: OpenEnergyMonitor Other reference projects: How do I monitor power Core material: ferrite External Material: Plastic Input current: 0A-20A Output current: 0-1V Opening size: 13 x 1m Output plug: 3.5mm Dielectric strength: 6000V AC/1min Operating temperature: -25-70°C Cable length: 1.0m Flame retardant grade: UL94-V0 Mechanical strength: >500(20°C) Model: SCT-013-030 Reference project: OpenEnergyMonitor Other reference projects: How do I monitor power Core material: ferrite External Material: Plastic Input current: 0A-30A Opening size: 13 x 1m Output plug: 3.5mm Dielectric strength: 6000V AC/1min Operating temperature: -25-70°C Cable length: 1.5m Flame retardant grade: UL94-V0 Mechanical strength: >500(20°C) Model: SCT-013-050 Rated input current: 50A Rated input voltage: 1V Output plug: 3.5mm Operating temperature: -25-70°C Dielectric strength: 6000V AC/1min Cable length: 1M/3.3Ft Opening Size: 13 x 1m/0.5" x 0.5"(L*W) Overall Dimensions: 5.7 x 3.2 x 2.2cm/2.2" x 1.2" x 0.87"(L*W*H) Housing material: plastic Core material: ferrite Model: SCT-013-000/100A Applicable to: lighting equipment, AC motors, air compressors, Monitoring: current measurement and protection Comply with: UL94-V0 flame retardant performance Two forms of output current, voltage (voltage output built-in sampling resistor) Nonlinearity?%(10%-120% rated input current) Model: SCT-013-000 Reference project: Open Energy Monitor Core material: ferrite Dielectric strength: 6000V AC/1min Input current: 0A-100A Flame retardant grade: UL94-V0 Mechanical strength: opening and closing times, not less than 1000 times (20 times?) Opening Size: Approx. 0.51*0.51 inches/13x1m Dielectric strength: 6000V AC/1min Working temperature: -25-70ò¾ Package list: 1 * Split core current transformer Note: 1.The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2.Please allow slight manual measurement deviation for the data.