BRT LB02G (Upgraded Version) If you need low cost no battery inside type, pls click:2/3/4-wire 0-20mA 0-10V Signal Generator BRT LB01GNB Max. Output range: max. -10V to 10V., 2/3/4-wire 0-22mA sink or source signal. Voltage output can be exactly 0.00V Output range can be 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, etc. switchable and adjustable. Display modes can be: actual current/voltage signal value display, 0.0-100.0(%), 0.0-50.0 (Hz), switchable. User can set 9 x fast signal output points, more convenient to do debugging. Have battery capacity status indicator, and battery voltage value display function. Support 24V operating power supply via wiring terminals and 5V from USB port, can be used in indoors or outside industrial site. 1000mAH 3.7V re-chargeable battery embedded inside, *Automatic stopping recharging battery when battery has been fully charged.. Output accuracy can be calibrated by user, precision 0.01V, 0.01mA output and LED display output signal value accurately. Adjusting steps can be fine adjustment or rough adjustment, switchable. Have short-circuited protection circuits and polarity reverse connection protection circuits in Brightwin signal generator. Refined user-friendly external shell, refined accurate encoders' knob to adjust output signal, more slim size. Its default output range is 0-10V, 0-20mA, user can adjust it to make it output -10V to -10V, 4-20mA, etc., output ranges. Output accuracy can be calibrated by user. Colour: black + gray Material: plastic Package Contents: 1 * Signal Generator 1 * USB Cable (random color, don't accept the specified color) 4 * Alligator Clip 1 * Screwdriver (random color, don't accept the specified color) 1 * English instruction manual 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 +/-