Cheap And Discounts Chingjun 32-Channel IO Relay Output PLC LAN RS485 232 2AI 2AO 4-20mA 0-10V Ladder Diagram 3U 64MR Modbus PLC for IoT Automation Wholesale. Buy Directly From Merchant Shop910843040 Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.