This is a four channel temperature controller with built-in solid state relays, each channel with a 40A solid state relays

1) PID controller and solid state relay built together, save a lot of time on the wiring and maintainence, heatsink incorperated, the SSR is pluggable from the slot, the unit is panel mounted or DIN rail mount. the load can be wired to the unit directly, each channel can handle maximum 25 amps, fast fuse at 30 amps are included to prevent overload
2)LED display available and keyboard buttons for configuration, it is possible to configure the unit in case you don't have master device in your system
3)Standard modbus RTU included
4)Support Thermocouple input, 0.3% accuracy
5)Four separate channel, PID control or ON/OFF control mode, Auto/manaul control transfer for each channel, Run/stop, auto-tuning function for each channel, four groups of PID parameters and maximum and minimum output configurable for each channel.