Adjustable 4-20 mA signal generator, analog current and voltage simulator, 0-10 V/0-20 mA signal sources for

High-precision output: 0-10 V/0-20 mA, 0.01 V/0.01 mA accuracy. Output voltage adjustment via dial (calibrable). Power supply: built-in battery, USB-5 V, or external 15-30 V DC power supply. 2, 3, or 4-wire current output. Passive and active compatible. Coarse and fine adjustment (number of clicks adjustable). Customizable quick-adjustment mode. Off-power output value. Short-circuit, reverse polarity, and overload protection. 3 power modes: mobile phone charger, power bank, or 24 V external power supply. Power: 1 W (not charging) / 5 W (charging). Lithium battery: 1000 mAh, 3.7 V. Maximum charging current: 0.8 A. External power supply: USB 5 V, current: 0.2 A (not charging) / 1 A (charging). Digital display: 4 digits, 2 decimal places. Encoder: 20 pulses per knob turn. Power supply: Built-in 1000 mAh lithium battery. Dimensions: 9.9 × 6.1 × 2.54 cm. Color: See image. Material: ABS. Package contents: 1 signal generator. Note: The color of the item in the photo may slightly differ from the real thing due to lighting and your monitor settings. The measurement allowed error is +/- 1 to 3 cm.