Red Lion Controls Process Control PID Controllers - offering a wide variety of 1/16 DIN and 1/8 DIN controllers, as well as DIN rail mounted models. All devices provide auto-tune for easy setup and an advanced control algorithm to limit overshoot. For simple multi-zone applications, our rail mounted Dual Loop Controller is designed to interface via Modbus, DH-485 or DeviceNet, allowing easy connection to your control system.