In addition to the extended range power supply 24.230 Vac / Vdc, ATR401 also integrates all options for sensor readings and actuator control into a single device. With dual universal analog inputs and outputs that can be configured as relays or SSRs, users or retailers can reduce inventory requirements. This series also includes models with serial communication RS485 / Modbus-RTU and analog output 0-10 V, 0/4-20 mA. The memory card with built-in battery simplifies the possibility of copying parameterization, without the need to power the controller.