Specification: Item Model: JS-420ISG-V2 Supply Voltage: 15 - 30V Output Range: 4 - 20mA / 3 - 21mA Display: Actual Current / Percentage / Hz Sampling Resistance: 500 Output Accuracy: 0.5% Display Accuracy: 0.01 Color: Shown As Pictures Size: Approx. 8 * 4.2 * 4.5cm / 3.14 * 1.65 * 1.77inch Weight: 44g Type: Signal Generator Package List: 1 * Signal Generator 1 * Manual Output Range: This signal generator can use 4-20mA to generate voltage and control the current in the circuit, it can meet your needs with clear instructions. High Accuracy: The Signal Generator has an accuracy of up to 0.01, with LCD display, adjustable rotary encoder, ideal for professional use. Powerful: Signal Generator's output range can be set. 4-20mA (device control)/-21mA (signal debugging) Clear Display: Loop Signal Generator can be set to display the way you want to meet your various needs, and it is easy and convenient to view the values. Calibrated Linear Output: The actual output of the signal generator can be consistent with the display of the customer's equipment, with high accuracy to protect your rights. Output Range: This signal generator can use 4-20mA to generate voltage and control the current in the circuit, it can meet your needs with clear instructions. High Accuracy: The Signal Generator has an accuracy of up to 0.01, with LCD display, adjustable rotary encoder, ideal for professional use. Powerful: Signal Generator's output range can be set. 4-20mA (device control)/-21mA (signal debugging) Clear Display: Loop Signal Generator can be set to display the way you want to meet your various needs, and it is easy and convenient to view the values. Calibrated Linear Output: The actual output of the signal generator can be consistent with the display of the customer's equipment, with high accuracy to protect your rights.