Allen Bradley Guardmaster Transmitter Plug-In Module For GuardShield Safety Light Curtain, M12 - 450L-APT-PW-5 This plug-in module from Rockwell Automation's Allen Bradley range is used to send signals from a GuardShield safety light curtain to a programmable logic controller (PLC). Once installed, the device can monitor up to three light curtains with presence sensing device initiation (PSDI). Real-time diagnostic information is delivered by the unit over a local area network (LAN), so you can pinpoint the exact location of any item that trips the safety sensors. This reduces downtime, increases machine efficiency and improves productivity. • Plug-in connection style is quick, easy and tool-free• Standard M12 adapter provides a stable link for seamless signal transmission• Two LEDs (light-emitting diodes) on the transceiver indicate the best alignment position Standards and Certifications • TUV (Technischer Überwachungsverein)• ISO (International Organisation for Standardisation)• IEC (International Electrotechnical Commission) 450L Plug-in, Bottom(connection), Transmitter, M12, 5 pin, male Can I override a safety function with this module? Yes. This device lets you temporarily suspend a safety function of the light curtains, provided certain conditions are met. Once activated, materials can pass through the protective field without shutting down the machine.