<p>1. Use high quality materials, </p> <p>2. Compact size and exquisite appearance</p> <p>3. Easy to use</p> <p>4. High efficiency, reliable and stable performance</p> <p>5. Wide range of applications</p> <p>Active current output: 0-22mA (minimum output is about 0.1mA), load 0-550\u03A9</p> <p>Passive current output: 0-22mA (minimum output is about 0.1mA), external power supply 15V-30V, load 0-550\u03A9</p> <p>Voltage output: 0V-12V (minimum output is about 0.05V)</p> <p>24V output voltage: Drive current 35mA, do not use more than 35mA</p> <p>Battery undervoltage prompt. When the undervoltage indicator lights up, please shut down and charge it in time</p> <p>If you do not use it for a long time, charge it at least once every 2 months to prevent battery damage</p> <p>MICRO-USB interface for power supply or charging</p> <p>Use ring mirror: 0\u00B0C-50 \u00B0C without condensation</p> <p>Due to different factory batches, the product words are different, and the product accessories have slight differences in color and appearance, but it does not affect normal use</p> <p>Colour:As Shown</p> <p>Material:Circuit board + plastic</p> <p>Package Contents:</p> <p>1 x 4-20mA signal generator</p> <p>Only the above package content, other products are not included.</p> <p>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.</p>