Digital 0-22mA 0-12V Voltage Signal Generator Current Transmitter Calibrator Source Professional Electronic Measuring Instrument Features: 1. Use of high-quality materials, durable 2. Compact size, exquisite appearance 3. Easy to use 4. High efficiency, reliable and stable performance 5. Wide range of applications Specifications: Active current output: 0-22mA (minimum output is about 0.1mA), load 0-550Ω Passive current output: 0-22mA (minimum output is about 0.1mA ), external power supply 15-30V, load 0-550Ω Voltage output: 0V-12 V (minimum output is about 0.05V) 24V voltage output: drive current 35mA, please do not use more than 35mA Battery version lithium battery powered, rechargeable; no battery version directly inserted into the 5v charger use Battery undervoltage prompt, when the undervoltage indicator lights up, please shut down and charge in time Long time not in use, at least every 2 months charging to prevent battery damage Use MICRO USB interface power supply or charging Use ring mirror: 0 ° C- 50 ° C without condensation Package Included: Signal generator *1