7m Beam-Break Detection With a Plug-In M12 Connection
The EMAS SPQ50RP2CSX is a 50mm square retro-reflective photoelectric sensor with an M12 4-pin connector, so it can be swapped in seconds without rewiring. It sends a beam to a reflector mounted opposite and switches when an object breaks the beam, detecting objects across gaps up to 7m wide. A universal 24-240V AC/DC supply and a built-in relay output (3A at 250V AC resistive) let it run from almost any control voltage and switch a contactor, lamp or PLC input directly. An LED shows the output state.
MPN SPQ50RP2CSX
- Retro-reflective, 7m sensing distance (reflector required)
- Relay output, 1 contact, 3A at 250V AC resistive
- Universal 24-240V AC/DC supply, 50/60Hz
- Short-circuit, overload and reverse-polarity protection
- 50mm square plastic body with LED indicator, M12 4-pin connector
Downloads: EMAS SPQ50RP2CSX datasheet (PDF)
Technical Details
Frequently Asked Questions
Is a connector cable included?
No. The sensor has an M12 4-pin plug, so you need a matching M12 4-pin female cable. We stock the EMAS SKM12P4YXV2 2m and SKM12P4YXV5 5m M12 sensor cables. Check the pin-out on the EMAS datasheet before wiring.
Which reflector do I need?
EMAS make two to suit the SPQ series: the compact SPQREF1 40x60mm reflector and the larger SPQREF2 100x100mm reflector. The larger reflector returns more light, which makes alignment easier and helps over longer distances.
Can the relay switch a mains load directly?
Yes. The relay contact is rated 3A at 250V AC (resistive), so it can switch a contactor coil, small lamp, beacon or PLC input directly. For motors or other inductive or high-current loads, switch a contactor rather than the load itself.
Can it be used outdoors or in wet areas?
No. The body is rated IP50, so it is protected against dust but not water. It suits dry indoor areas such as warehouses, conveyors and machine guarding from -20°C to +65°C.
Industry Applications
- Conveyor and pallet detection - presence, counting and end-of-line sensing across wide conveyors
- Machine builders and OEMs - plug-in connection for quick installation and replacement
- Doors, gates and cranes - beam-break detection across openings and travel paths up to 7m
Prefer a pre-wired cable? The EMAS SPQ50RP2CC2 is the same sensor with a 2m cable. To signal machine status, pair it with the EMAS IF5T024XM05-1 24V LED light tower.