BRT LB02G (Upgraded New Version) 2/3/4-wire 0-20mA 0-10V Signal Generator. Max output range: -10V to 10V, 2/3/4-wire 0-22mA sink or source signal. Voltage output can be exactly 0.00V. Output range options include 0-20mA, 4-20mA, 0-22mA, 0-1V, 0-5V, 0-10V, 0-2.5V, 0-3.3V, -5V to 5V, 1-5V, 2-10V, and other ranges, switchable and adjustable. Display modes: actual current/voltage signal value display, 0.0-100.0, 0.0-50.0 (Hz), switchable. User can set 9 fast signal output points for convenient debugging. Features battery capacity status indicator and battery voltage value display. Supports 24V operating power supply via wiring terminals and 5V from USB port, suitable for indoor or outdoor industrial use. Built-in 1000mAh 3.7V rechargeable battery with automatic charge cutoff when fully charged. Output accuracy is user-calibratable with precision of 0.01V and 0.01mA. LED display shows output signal value accurately. Adjustment steps offer fine or coarse control, switchable. Includes short-circuit protection and reverse polarity protection circuits. Compact, user-friendly design with precise encoder knob for signal adjustment. Default output range is 0-10V, 0-20mA;可调至-10V to 10V, 4-20mA, and other ranges. Output accuracy is user-calibratable. Color: black + gray. Material: plastic. Package includes: 1 x Signal Generator, 1 x USB Cable (random color), 4 x Alligator Clips, 1 x Screwdriver (random color), 1 x English instruction manual. Only the items listed are included; other products are not included. Note: Lighting and display differences may cause slight color variation between image and actual item. Measurement tolerance: +/- 1-3cm.