Omron E3JM-DS70M4T Photoelectric Sensor
Omron E3JM-DS70M4T uses diffuse-reflective sensing with a 940 nm infrared LED for object sensing across distances up to 700 mm. The sensor monitors light returned directly from the target and provides an SPDT relay output for compatible control circuits. Its multi-voltage input supports 12 to 240 VDC or 24 to 240 VAC, while Light-ON or Dark-ON operation can be selected according to the required switching sequence. An adjustable delay from 0.1 to 5 seconds supports timing requirements, and a one-turn adjuster assists sensitivity setup. The E3JM-DS70M4T belongs to the E3JM Series. Related timer-based models can be explored under timer photoelectric sensors across the wider range supplied through Omron Automation Sensors.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3JM-DS70M4T |
Omron E3JM-DS70M4T Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Diffuse-reflective |
| Sensing Distance | White paper (200 × 200 mm): 700 mm |
| Light Source | Infrared LED (940 nm) |
| Power Supply Voltage | 12 to 240 VDC, ripple (p-p): 10% max. 24 to 240 VAC, 50/60 Hz |
| Output Configuration | Relay |
| Connection Method | Terminal block |
| Control Output | SPDT, 250 VAC, 3A (cosφ=1) max., 5 VDC, 10 mA min. |
| Operation Mode | Light-ON Dark-ON (switch selectable) |
| Response Time | Operate or reset: 30 ms max. |
| Sensitivity Adjustment | One-turn adjuster |
| Timer Function | Delay time: 0.1 to 5 s (adjustable) |
| Ambient Illumination | Incandescent lamp: 3,000 lx max. |
| Ambient Temperature Range | Operating: −25°C to 55°C, Storage: −30°C to 70°C (with no icing or condensation) |
| Ambient Humidity Range | Operating: 45% to 85% (with no condensation), Storage: 35% to 95% (with no condensation) |
| Insulation Resistance | 20 MΩ min. at 500 VDC |
| Dielectric Strength | 2,000 VAC, 50/60 Hz for 1 min. |
| Vibration Resistance | 10 to 55 Hz, 1.5-mm double amplitude for 2 hours each in X, Y, and Z directions |
| Shock Resistance | 500 m/s2 3 times each in X, Y, and Z directions, 100 m/s2 3 times each in X, Y, and Z directions |
| Degree Of Protection | IEC 60529: IP66 |
| Material | ABS (Acrylonitril Butadiene Styrene), Methacrylic resin, Polycarbonate, Iron |
| Weight | Approx. 160 g |
The Omron E3JM-DS70M4T Photoelectric Sensor uses diffuse-reflective sensing with a 940 nm infrared LED for objects positioned within a maximum distance of 700 mm. Light returns directly from the target surface, allowing the sensor to operate without a separate reflector. Its SPDT relay supports up to 3 A at 250 VAC under the stated resistive-load condition. The sensor accepts 12 to 240 VDC or 24 to 240 VAC at 50/60 Hz and uses terminal-block wiring for electrical connection. Light-ON or Dark-ON operation can be selected according to the required sequence. A one-turn adjuster supports sensitivity setup, while the T version provides an adjustable delay from 0.1 to 5 seconds. Operate or reset time is specified at 30 ms max., and power consumption is 2 W max. The timing function allows the relay response to be adjusted where immediate switching is not required.
For an Omron timer diffuse photoelectric sensor requiring 700 mm sensing, relay output, and adjustable delay control, the corresponding model is the E3JM-DS70M4T. Its 0.1 to 5 second timer differentiates it from standard DS70M4 versions while retaining infrared sensing and wide AC/DC supply compatibility. The specification also suits searches for an Omron 700 mm timer sensor and Omron AC DC diffuse sensor. Operating temperature extends from -25 to 55°C, while the one-turn sensitivity adjustment supports setup for different targets. For a related T-version using the G model designation, see E3JM-DS70M4T-G.
