Omron E3JM-R4M4T-G — Photo Sensor, 4 m, Timer, AC/DC
SKU: E3JM-R4M4T-GUSD 30.00
Omron E3JM-R4M4T-G retro-reflective photo sensor, 4 m, AC/DC relay, built-in timer. In stock.
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Product Overview
The Omron E3JM-R4M4T-G is a retro-reflective photoelectric sensor with MSR (mirror surface rejection) and a built-in timer from the E3JM slim-style series, manufactured by Omron Corporation. Hengyixin Automation ships this sensor from our Xiamen warehouse with a 30-day DOA return window and a datasheet PDF included in the box.
The sensor detects opaque objects at 100 mm to 4 m when used with the supplied E39-R1 reflector. Light source is a polarised red LED at 660 nm, which rejects false triggers from shiny surfaces. Output is an SPDT relay rated 3 A at 250 VAC. Response time is 30 ms.
Supply is universal 12 to 240 VDC or 24 to 240 VAC at 50/60 Hz. The built-in timer is adjustable from 0.1 to 5 seconds and selects ON-delay, OFF-delay or one-shot operation. The ABS housing is IP66 and the unit ships with a PG13.5 conduit entry, a mounting bracket and the E39-R1 reflector. For a smaller square-body 6 m AC/DC retro sensor, pick the E3JK-RR12-C.
Key Features
- Retro-reflective photo sensor with MSR and polarised red LED 660 nm
- 4 m sensing range with the supplied E39-R1 reflector, 30 ms response
- SPDT relay 3 A at 250 VAC, Light-ON / Dark-ON selectable
- 12-240 VDC or 24-240 VAC universal supply, built-in timer 0.1-5 s, IP66 ABS
- SKU: E3JM-R4M4T-G
- Series: Omron E3JM-series universal AC/DC photoelectric sensor
- Voltage: 12 TO 240 VDC
Best-Fit Applications
- Box detection on a sortation conveyor where the off-delay timer rides over normal package gaps
- Vehicle loop on an industrial bay door where the 4 m range covers the doorway opening
- Spare drop-in for an existing E3JM panel with the same E39-R1 reflector and bracket mounted
Buying Checklist
- Pick the E3JM-R4M4T-G for a 4 m retro-reflective AC/DC photo sensor with MSR and a built-in timer.
- Pick the E3JK-RR12-C instead when the cabinet needs a smaller square-body 24-240 VAC/DC photo sensor with a 6 m / 10 m range.
- Pick the E3S-DBN21 instead when the panel needs a compact 30 mm retro-reflective sensor on 12-24 VDC only.
Technical Specifications
| Manufacturer | Omron Corporation (Japan) |
|---|---|
| Series | Omron E3JM-series universal AC/DC photoelectric sensor |
| Model / SKU | E3JM-R4M4T-G |
| Sensing Method | Retro-reflective with MSR (polarised red LED) |
| Sensing Distance | 100 mm to 4 m with supplied E39-R1 reflector |
| Light Source | Polarised red LED, 660 nm |
| Supply Voltage | 12 to 240 VDC; 24 to 240 VAC, 50/60 Hz |
| Power Consumption | 2 W max |
| Control Output | SPDT relay, 250 VAC 3 A (cos phi = 1) max; 5 VDC 10 mA min |
| Operation Mode | Light-ON / Dark-ON selectable; built-in timer 0.1-5 s (ON / OFF / one-shot) |
| Response Time | 30 ms max operate or reset |
| Protection / Connection | IP66 ABS housing; PG13.5 conduit entry; 25 x 65 x 75 mm |
Manufacturer documentation
Omron's own product page, where the manufacturer's current specification and lifecycle information are published. We are an independent distributor and cannot mirror those documents; the link goes to Omron's site.
FAQ for E3JM-R4M4T-G
What does the MSR function do?
MSR (mirror surface rejection) polarises the red LED beam and uses a polarising filter on the receiver, so the sensor ignores light bouncing off shiny or reflective surfaces and detects only the beam returning from the dedicated E39-R1 reflector.
How does the built-in timer work?
The 0.1 to 5 s timer adds a delay to the relay output. Select ON-delay, OFF-delay or one-shot operation with the rotary switch on the back. ON-delay starts the timer when the beam breaks; OFF-delay starts the timer when the beam returns.
What supply voltage does the E3JM-R4M4T-G accept?
Universal 12 to 240 VDC or 24 to 240 VAC at 50/60 Hz. The same sensor drops into a 24 VDC PLC cabinet or a 240 VAC relay panel. Power consumption is 2 W max.
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