SHJ Electronic Co.,Ltd., established in 2005 in Shanghai, is a manufacturer of low cost control systems. We are specialized in Modbus, Modbus/TCPIP protocol, RS485, CAN, Zigbee and Ethernet hardware. We can do such signal inputs & outputs as 0-10V, 0-5V, 0-20mA, dry contact, pulse, frequency inputs and open-collector, relay, 24VAC triac, 0-10V, 0-5V, 0-20mA outputs.
We also can design a close loop controller with a small PID control.
Maybe the IO modules we developed do not match your project requirements, but we can design and develop modules/products with any combination of listed signals inputs/outputs and listed communication method.
We can also work on OEM's and customize it to your applications through applying existing products or designing new ones to your specifications. We can ship sample in one month because of having good command of these techniques.