The Siemens 3RG7210-6MC00 is a SIMATIC PXO610 K80 diffuse sensor — energetic type, meaning it emits a focused beam and detects reflected light from the target object. It's built for presence detection in industrial automation, with a universal control voltage from 20 to 320 V AC/DC and a relay output with C-contact (changeover) antivalent, rated for 2 m cable length. The housing measures 83 x 61 x 25 mm, sealed to IP67, with a PG11 gland and 5-pole connection. An integrated timer adjustable from 0.1 to 10 s adds flexibility for delayed switching.
The UC 20-320 V supply range covers both AC and DC control circuits commonly found in European and global panels — 24 VDC, 48 V, 110 V, 230 V AC all fall inside. The relay output is a C-contact (changeover) antivalent, so you get both normally-open and normally-closed contacts in one package, simplifying wiring for fail-safe or dual-state logic. IP67 means the sensor handles washdown and dusty environments; the PG11 gland accepts standard cable diameters for secure entry. The 0.1–10 s timer is adjustable on the unit, useful for suppressing brief interruptions or delaying a signal in conveyor or material-handling sequences.