Omron E3Z-D61K 2M Photoelectric Sensor
Omron E3Z-D61K 2M is a diffuse-reflective photoelectric sensor intended for direct object sensing across a 100 mm working distance. Its 870 nm infrared LED sends light toward the target, and the returned optical signal is evaluated by the sensor to establish the switching state. The NPN output interfaces with compatible machine-control equipment, while Light-ON or Dark-ON operation can be selected according to the control requirement. Operating voltage is 12 to 24 VDC, and the sensor includes a 2 m pre-wired cable. A one-turn adjuster supports sensitivity setting, while response time is specified at 1 ms maximum. Within the E3Z Series, the E3Z-D61K 2M provides a compact NPN option for infrared diffuse sensors across Omron Industrial Sensors.

| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3Z-D61K 2M |
Omron E3Z-D61K 2M Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Diffuse-reflective |
| Sensing Distance | 100 mm |
| Light Source | Infrared LED (870 nm) |
| Power Supply Voltage | 12 to 24 VDC |
| Output Configuration | NPN |
| Connection Method | Pre-wired 2 M cable |
| Current Consumption | 30 mA max. |
| Control Output | Load power supply voltage: 26.4 VDC max., Load current: 100 mA max. Residual voltage: Load current of less than 10 mA: 1 V max. Load current of 10 to 100 mA: 2 V max. |
| Operation Mode | Light-ON/Dark-ON selectable |
| Response Time | Operate or reset: 1 ms max. |
| Sensitivity Adjustment | One-turn adjuster |
| Indicators | Operation indicator (orange) Stability indicator (green) Through-beam Emitter has power indicator (orange) only. |
| Ambient Illumination | Incandescent lamp: 3,000 lx max. Sunlight: 10,000 lx max. |
| Ambient Temperature Range | Operating: −25 to 55°C, Some connector models: −40°C to 55°C, Storage: −40 to 70°C (with no icing or condensation) |
| Ambient Humidity Range | Operating: 35% to 85%, Storage: 35% to 95% (with no condensation) |
| Insulation Resistance | 20 MΩ min. at 500 VDC |
| Dielectric Strength | 1,000 VAC, 50/60 Hz for 1 min |
| Vibration Resistance | Destruction: 10 to 55 Hz, 1.5 mm double amplitude for 2 hours each in X, Y, and Z directions |
| Shock Resistance | Destruction: 500 m/s2 3 times each in X, Y, and Z directions |
| Protection Circuits | Reversed power supply polarity protection, Output short-circuit protection, Mutual interference prevention, and Reversed output polarity protection |
| Degree Of Protection | IEC, IP67 |
| Material | PBT (polybutylene terephthalate), Methacrylic resin |
| Weight | Approx. 20 g |
The Omron E3Z-D61K 2M Photoelectric Sensor uses diffuse-reflective sensing across a 100 mm working distance. Its 870 nm infrared LED directs light toward the target, while the sensor evaluates the returned optical signal to establish the switching state without a separate reflector. The NPN output supports a load supply voltage up to 26.4 VDC and a load current up to 100 mA. Selectable Light-ON and Dark-ON operation allows the output behavior to match the required machine logic. The sensor operates from 12 to 24 VDC and includes a 2 m pre-wired cable. Current consumption is specified at 30 mA maximum, response time at 1 ms maximum, and a one-turn adjuster supports sensitivity setting.
For an Omron NPN diffuse sensor requiring a 100 mm range and fixed 2 m cable, the applicable model is the E3Z-D61K. Ambient-light resistance reaches 3,000 lx under incandescent light and 10,000 lx under sunlight. Operating temperature extends from -25 to 55°C, while storage covers -40 to 70°C without icing or condensation. Reverse supply polarity, output short-circuit, mutual-interference, and reversed-output polarity protection are included. The listed body materials are PBT and methacrylic resin. Its configuration also suits searches for an Omron 100 mm NPN sensor and Omron infrared diffuse photoelectric sensor. Direct target-return sensing makes this model suitable where installation of a reflector is not desired. For another E3Z-D61 version using a 2 m cable and a supplied 5 to 100 mm wide-view range, see the E3Z-D61 2M.
