1、Clear Display: This signal generator has bright and clear 4 digit high definition digital tube, which can be used to monitor the output current and voltage. 2、Excellent Design: The signal generator is equipped with an aluminum knob cap, electroplating buttons, excellent membrane, charging indicator light, and battery switch. 3、High Practicality: On the normal operation interface, save a voltage and current value, click on the encoder to save, and release the OK button to save successfully. Restarting directly displays the saved values, eliminating the need to adjust parameters every time the machine is turned on, which is very practical. 4、Wide Application: This voltage and current signal generator is the most commonly used electrical test instrument for electrical engineers and technicians to install, commission, overhaul and maintain electrical equipment in the field. 5、Easy to Carry: The signal generator is small in size and easy to carry, making it the best choice for on site debugging. Item Type: Signal Generator Material: ABS Model: SG002 Use: Signal generator Color: Black Voltage Output: -12V to +12V Current Output: 0 to 24mA Built in Battery: 3.7V 1100mAh lithium battery (shipped with built in battery) 1 x Signal Generator