Technical Parameters: 1. Active current output: range: 0-24mA resolution: 0.01 mA maximum load: 750Ω Precision:±(0.1 percent and0.005)      2. Passive current output: range: 0-24 mA resolution: 0.01 mA external power supply up to 30V Precision:±(0.1 percent and0.005)      3. Voltage output: range: 0-24 V resolution: 0.01v maximum current 30mA Precision:±(0.1 percent and0.005)      4. 24V voltage output: drive current: 24mA resolution: 0.01 mA Precision:±(0.1 percent and0.005)      5. Current input measurement: range: 0-24 mA resolution: 0.01 mA input impedance:100Ω Precision:±(0.1 percent and0.05)            6. Voltage input measurement: range: 0-30 V resolution: 0.01 V input impedance: 2MΩ Precision:±(0.1 percent and0.05)      7. PWM output (frequency):Range: 0-9999Hz      8. A sngle 3.7V 3000mAh lithium battery power supply Standby time is 26 hours the using time varies, based on the usage(It can be 8-10 hours with 20mA continuous output)      9. Operating environment: 0 °C - 50 °C      10. Internal reverse and overcurrent protection protection voltage:30V      11. Output automatically      12. Size: 92mm x 72mm x 30mm      Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on      color:As shown      Material:ABS            Package Contents:      1 x FNIRSI SG-003A Multifunction Signal Generator Calibrator      4 x Test Clips      1 x Type-C charging cable      1 x EU Charger            Only the above package content, other products are not included.      Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.