The RFID technology used in the eloProtect E sensors offers the user individual coding possibilities. In addition, the tampering protection can be selected according to the application. The use of this new technology simplifies the mounting conditions through larger offset values and enables the installation of series connections with up to 30 sensors. The direct monitoring of large contactors via the EDM input is possible thanks to the integrated evaluation electronics and the high switching capacity. This means no additional safety modules are necessary and the sensors can also be used as a stand-alone solution.