Handheld Digital Voltage and Current Signal Generator 0-4-20mA Current Transmitter 0-5-10V Positive and Negative Voltage Output Product Features 1. The product is compact and easy to carry. 2. Simple to use, easy to operate. 3. Long service life, reliable quality. 4. Excellent quality, exquisite workmanship, fine materials. 5. Wide application, can be used in multiple scenes. Reference description Power supply: 3 kinds of power supply, with mobile phone charger rechargeable treasure or external 24V can charge/work (1) External terminal power supply DC15-30V Power 1W(not charging)/4W(charging); (2) External microUSB-5V current 0.2A (not charging)/0.8A (charging); (3) [optional] built-in 3.7V lithium battery capacity 1000mAh, maximum charging current 0.6A, full of automatic non-charging, generally more than 4 hours, full can be used for 1-5 hours to see the size of the output load; Voltage output: 10V adjustable, calibrated precision 0.05V , drive current