Cheap And Discounts 1/5PCS 2CH Voltage Current RS485 Collector Module ADC 0-5V 0-10V 4-20MA 0-20MA Serial Port UART AI Input Module PLC Analog IO Wholesale. Buy Directly From Merchant Shop1102319565 Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.