The 121451 is a switch amplifier designed as a four-channel isolated barrier, suitable for dry contact or NAMUR signals. It features four relay outputs operating at up to 30VDC and functions as a signal repeater with isolating contact capabilities. The device includes a proximity sensor with a 9.5 mm detection range, RGB light indicator, external Teach-in, and a push-pull output in diffuse mode. Its robust metallic housing is cylindrical in shape (M18 x 1), making it suitable for various industrial applications requiring reliable signal amplification and isolation.
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