The transistor outputs of conventional sensors are designed for small load currents. If the user wants to switch higher currents or even alternating currents, he must use a switching amplifier. It uses the sensor signal to control an output relay.
ifm offers switching amplifiers in one and two-channel design. They have an integrated wide-range power supply (110...240 V AC) to supply the connected sensors with voltage (24 V DC). Thanks to their slim design, the switching amplifiers take up very little space in the control cabinet.