The voltage and current signal generator is the most commonly used electrical test instrument for electrical engineers and technicians during onsite installation, commissioning, overhaul and maintenance of electrical equipment. Pluggable terminal blocks, safe and convenient wiring. 4-digit high-definition digital tube, the display brightness is evenly adjustable (1-8 brightness). Two power supply methods: external power supply, DC5V micro-USB. As long as you work all the way, you can also connect at the same time.DC 15-30V external power supply, which can share the 24V power supply of PLC and other equipment. Micro-USB universal interface, can be connected to mobile power, charger, computer USB port, etc. On the normal operation screen, save a voltage and current value, click the encoder to save, and after releasing the "OK" button, the screen displays "...", indicating that the save is successful. After restarting, the saved value be displayed directly, and there is no need to adjust the parameters every time when starting up, which is very practical. Easy to carry and small in size, it is the for on-site debugging. Color: Black Material: plastic Package Contents: 1 x signal generator Only the above package content, other products are not included. Note: Light reflection 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 +/- 1-3cm.