AS-Interface systems and sensors In addition to PLCs, gateways, modules and connection technology, the ifm AS-Interface range includes a number of intelligent sensors and systems. As-i valve, inductive sensor, and temperature sensor options The AS-i AirBox is a combination of an I/O module and a solenoid valve. In pneumatic applications, it is used for decentralised control of cylinders or valves, flaps and slides actuated by valve actuators. The RF identification system DTS125 enables non-contact reading from and/or writing to RFID transponders (ID tags). The compact read/write heads include, in addition to the antenna, the complete evaluation and the interface to AS-Interface. So the units can be operated directly in the AS-i network. The range also includes inductive sensors, temperature sensors, as-i valve sensors for rising stem valves and dual sensors for valve actuators with integrated AS-Interface.