Features 1.0.01V voltage resolution and 1% output accuracy. If the error is greater than 1%, it can be calibrated. 2.Can be set as a serial hyperterminal (serial assistant) or PLC ENTER. Up to 247 devices can be supported in parallel. 3.CH1 (O1) output voltage is 0‑5V, and the maximum output current is 20MA. The accuracy of 1‑5V is 1%, and there will be 50HZ/40MV ripple when &lt;1V. 4.CH2 (O2) output voltage is 0‑10V, and the maximum output current is 20MA. The accuracy of 2‑10V is 1%, and there will be 50HZ/80MV ripple when &lt;2V. 5.Can be applied to 4‑20MA / 0‑20MA sensor, current and voltage signal transmission and so on. Specification Condition: 100% Brand New Item Type: Module Material: ABS 1.Working voltage: DC 12 (DC 12-25V), recommended power supply, small ripple 2. Working Current: 12-13MA 3. Support 03 06 function codes 4. CH1 (O1) output voltage is 0-5V, and the maximum output current is 20MA. The accuracy of 1-5V is 1%, and there will be 50HZ/40MV ripple when <1V. CH2 (O2) output voltage is 0-10V, and the maximum output current is 20MA. The accuracy of 2-10V is 1%, and there will be 50HZ/80MV ripple when <2V. 5. The voltage resolution is 0.01V, and the output accuracy is 1%; if the error is greater than 1%, it can be calibrated 6. Can set as serial hyper terminal (serial assistant) or PLC Enter 7. Up to 247 devices can be supported in parallel Note: This is a low-cost digital-to-analog conversion module based on the PWM + ADC solution. It has the following disadvantages: 1. Channel 1 (O1) has 1% accuracy at 1-5V, <1V has 50HZ/40MV ripple, channel 2 (O2) has 1% accuracy at 2-10V, and <2V has 50HZ/80MV ripple . 2. The minimum output voltage of channel 1 (O1) is 0.05V, and the minimum output voltage of channel 2 (O2) is 0.1V 3. There is a 10-20MS high pulse when starting up Application: 4-20MA / 0-20MA sensor Automation Industrial PLC Smart home, home automation Recognition system RS485 remote monitoring Multimeter voltmeter Package List 1 x Module