{"product_id":"omron-retro-reflective-photo-eye-e3k-r10k4-nr-1","title":"Omron Retro-Reflective Photo Eye | E3K-R10K4-NR-1","description":"\u003cp\u003eThe Omron E3K is a heavy-duty retro-reflective photo eye built specifically for door and gate control. One unit mounts on one side of the opening and bounces an infrared beam off a reflector on the opposite jamb, so wire only runs to one side. Break the beam and the relay drops out, stopping or reversing the door. A universal 24-240V AC\/DC supply and a full DPDT relay are what let it drop straight into older contactor-driven commercial operators that were never designed around low-voltage two-wire sensors.\u003c\/p\u003e\n\u003ch5\u003e\u003cstrong\u003eWill This Work On My Operator?\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cp\u003eThe E3K can be wired three different ways off the same terminal strip, which is why it fits both current and legacy control systems:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"text-decoration: underline;\"\u003eTraditional non-monitored (dry contact):\u003c\/span\u003e for older operators with a plain sensing-device input. Power to terminals 7 and 8, safety relay to terminals 4 (NC2) and 6 (C2).\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"text-decoration: underline;\"\u003eUL 325-2018 10K resistor method:\u003c\/span\u003e power to terminals 7 and 8, safety relay to terminals 1 (C1) and 3 (NC1). The 10K resistor is built into this model — nothing to add.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"text-decoration: underline;\"\u003eUL 325-2018 normally-closed method:\u003c\/span\u003e power to terminal 7 (negative) and 8 (positive), safety relay to terminals 5 (NO2) and 6 (C2), with a jumper from terminal 6 to terminal 7.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003eOverhead Door Model SEL and SEL+:\u003c\/span\u003e use the traditional non-monitored method. Overhead Door's external wiring diagram for these operators shows two-wire sensing devices landing across the \u003cstrong\u003eC3\u003c\/strong\u003e and \u003cstrong\u003eSE\u003c\/strong\u003e terminals on the operator's control strip, and states that a sensing device should be installed if the door is to have momentary contact close. Without one, the operator has to be closed with constant pressure on the button. The SEL control circuit runs at 24 VAC off a 28 VAC 30VA transformer, well inside the E3K's supply range.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003eHow to confirm before you buy:\u003c\/span\u003e open the operator's electrical box and find the wiring diagram inside the cover. Look for terminals labelled SE, sensing edge, photocell, or reversing device. Note the control voltage while you're in there — anything from 24 to 240 V, AC or DC, works.\u003c\/p\u003e\n\u003ch5\u003e\u003cstrong\u003eSpecs:\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003eModel:\u003c\/span\u003e E3K-R10K4-NR-1\u003cbr\u003e\u003cspan style=\"text-decoration: underline;\"\u003eSensing Method:\u003c\/span\u003e Retro-reflective\u003cbr\u003e\u003cspan style=\"text-decoration: underline;\"\u003eDetecting Distance:\u003c\/span\u003e 33 FT (10 m) with the included E39-R1 reflector; 40 FT (12 m) with a 3\" diameter reflector\u003cbr\u003e\u003cspan style=\"text-decoration: underline;\"\u003eMinimum Detectable Object:\u003c\/span\u003e 56 mm with E39-R1; 80 mm with a 3\" reflector\u003cbr\u003e\u003cspan style=\"text-decoration: underline;\"\u003eSupply Voltage:\u003c\/span\u003e 24 to 240 VAC ±10%, 50\/60 Hz; 24 to 240 VDC ±10%\u003cbr\u003e\u003cspan style=\"text-decoration: underline;\"\u003ePower Consumption:\u003c\/span\u003e 13.75 VA max; 3.75 W max (DC)\u003cbr\u003e\u003cspan style=\"text-decoration: underline;\"\u003eControl Output:\u003c\/span\u003e DPDT relay, 10 A at 240 VAC \/ 10 A at 28 VDC\u003cbr\u003e\u003cspan style=\"text-decoration: underline;\"\u003eOperation Mode:\u003c\/span\u003e Light-ON \/ Dark-ON, switch selectable\u003cbr\u003e\u003cspan style=\"text-decoration: underline;\"\u003eResponse Time:\u003c\/span\u003e 30 ms max\u003cbr\u003e\u003cspan style=\"text-decoration: underline;\"\u003eLight Source:\u003c\/span\u003e 950 nm pulse-modulated infrared LED\u003cbr\u003e\u003cspan style=\"text-decoration: underline;\"\u003eDirectional Angle:\u003c\/span\u003e Sensor 0.5° to 3°; reflector 40° min\u003cbr\u003e\u003cspan style=\"text-decoration: underline;\"\u003eIndicators:\u003c\/span\u003e Light Incident (red), Output Stability (green), Output Operation (yellow)\u003cbr\u003e\u003cspan style=\"text-decoration: underline;\"\u003eConnections:\u003c\/span\u003e Screw terminal strip, 3\/4-14 NPSM conduit hub\u003cbr\u003e\u003cspan style=\"text-decoration: underline;\"\u003eEnclosure:\u003c\/span\u003e UL Type 1. Omron additionally rates the housing IEC 144 IP67 and NEMA 1, 4, 4X, 12 Indoor, 13 — see the note below\u003cbr\u003e\u003cspan style=\"text-decoration: underline;\"\u003eOperating Temp:\u003c\/span\u003e -13°F to 131°F (-25°C to 55°C)\u003cbr\u003e\u003cspan style=\"text-decoration: underline;\"\u003eOperating Humidity:\u003c\/span\u003e 45 to 85% RH\u003cbr\u003e\u003cspan style=\"text-decoration: underline;\"\u003eHousing:\u003c\/span\u003e VALOX 553 PBT, PMMA lens, NBR seal, zinc-plated steel bracket\u003cbr\u003e\u003cspan style=\"text-decoration: underline;\"\u003eDimensions:\u003c\/span\u003e 7 5\/16\" H x 3 1\/2\" W x 2 1\/2\" D (4\" deep with bracket)\u003cbr\u003e\u003cspan style=\"text-decoration: underline;\"\u003eWeight:\u003c\/span\u003e 20.5 oz (580 g)\u003cbr\u003e\u003cspan style=\"text-decoration: underline;\"\u003eApprovals:\u003c\/span\u003e UL Recognized, file E333436; UL 325-2018 and CSA-C22.2 No. 247-92 cRUus\u003c\/p\u003e\n\u003ch5\u003e\u003cstrong\u003eIndoor or Outdoor?\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cp\u003eWe list this as an \u003cstrong\u003eindoor sensor\u003c\/strong\u003e, and here's why. The only third-party enclosure listing on the E3K is UL Type 1, which is general purpose — no water protection. The IP67 and NEMA 4X figures come from Omron's own specification sheet, not from a UL enclosure listing, and Omron's instruction manual tells you plainly not to use the sensor in water, rain, or outdoors, and not to aim it into direct sunlight.\u003c\/p\u003e\n\u003cp\u003eIn practice these get installed on exterior openings all the time and many of them last for years. We're not going to promise that. If you're putting one outside, protect it: mount it under cover where you can, keep it out of direct spray and direct sun, and add a reflector hood. That's your call to make, not a rating we're claiming.\u003c\/p\u003e\n\u003ch5\u003e\u003cstrong\u003eKit Includes:\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e(1) Omron E3K-R10K4-NR-1 retro-reflective photoelectric sensor\u003c\/li\u003e\n\u003cli\u003e(1) E39-R1 reflector\u003c\/li\u003e\n\u003cli\u003e(1) E39-L37 two-piece steel mounting bracket with hardware\u003c\/li\u003e\n\u003cli\u003e(1) LY2-DC12 plug-in relay output module, installed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003e\u003cstrong\u003eWorks With \/ Replaces:\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003eDirect replacement for an existing E3K-R10K4 or E3K-R10K4-NR installation.\u003c\/li\u003e\n\u003cli\u003eAlso sold as the E3K-2018 through MMTC.\u003c\/li\u003e\n\u003cli\u003eRetrofit sensing device for older commercial operators with a two-wire sensing input, including the Overhead Door Model SEL and SEL+.\u003c\/li\u003e\n\u003cli\u003eUpgrade to a 3\" diameter reflector to extend the range from 33 to 40 feet.\u003c\/li\u003e\n\u003cli\u003eOptional E39-T1, E39-T2 and E39-T3 timer modules add ON-delay, OFF-delay and one-shot timing.\u003c\/li\u003e\n\u003cli\u003eThe LY2-DC12 relay module is plug-in replaceable — a failed output does not mean a failed sensor.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003e\u003cstrong\u003eInstallation Notes:\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003eDisconnect power to the operator before wiring.\u003c\/li\u003e\n\u003cli\u003eMount the sensor and reflector at the same height on opposite sides of the opening, square to each other. The two-piece bracket gives a full 360° of horizontal rotation and tilts the sensor up to 45°; it secures with three 1\/4-20 bolts at 120° spacing.\u003c\/li\u003e\n\u003cli\u003eTerminals accept up to 14 AWG solid. Tighten to 9.8 in-lb (1.1 N-m).\u003c\/li\u003e\n\u003cli\u003eSet the Light-ON \/ Dark-ON selector to \u003cstrong\u003eLight ON\u003c\/strong\u003e for all three door and gate wiring methods.\u003c\/li\u003e\n\u003cli\u003eTurn the sensitivity potentiometer to maximum, then confirm the green stability LED stays lit across the full opening with the door moving.\u003c\/li\u003e\n\u003cli\u003eDo not run sensor wiring in the same conduit as line-voltage or motor leads. Use shielded cable if you have no choice.\u003c\/li\u003e\n\u003cli\u003eDo not power an AC-supplied sensor from a variable-frequency drive or other high-frequency source.\u003c\/li\u003e\n\u003cli\u003eThe sensor needs 100 ms after power-up before it is live. If the sensor and the operator are on separate supplies, power the sensor first.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWarning:\u003c\/strong\u003e Impact damage can permanently compromise the housing seal. Mount it, don't drive it. Never use a constant-contact close to override a sensing device that isn't working, and test the reversal after installation and at every service call.\u003c\/p\u003e","brand":"Omron","offers":[{"title":"Default Title","offer_id":54001755455764,"sku":"E3K-R10K4-NR-1","price":189.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0798\/7589\/9668\/files\/door-parts-omron-photo-eye-sensor-kit.jpg?v=1789143426","url":"https:\/\/www.door-parts.com\/products\/omron-retro-reflective-photo-eye-e3k-r10k4-nr-1","provider":"DOOR-PARTS","version":"1.0","type":"link"}