GUARDMASTER SAFETY RELAY EXPAND MODULE

The ALLEN-BRADLEY 440R-EM4R2 is an expansion module that extends Guardmaster monitoring safety relay systems by providing single-wire safe-only input and one normally-closed solid-state auxiliary output. Designed to integrate with safety relay networks, this expansion module supports monitoring of safety devices and helps maintain safe system responses through its dedicated input channel and solid-state output for auxiliary signaling. Its single-wire configuration simplifies wiring for compatible safety circuits while the N.C. solid-state auxiliary output offers reliable control of downstream devices. Suitable for industrial safety control panels and machine guarding applications where extending relay monitoring capability is required.

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