Omron E3NC-SA21 2M Smart Laser Photoelectric Sensor
The Omron E3NC-SA21 2M Photoelectric Sensor is a Smart Laser Sensor with an integrated amplifier unit supporting 2 outputs and 1 input for precise detection tasks. This model features NPN output, Light-ON/Dark-ON operation, and operates on a 10 to 30 VDC power supply with a pre-wired 2M cable. Manufactured by Omron, it is part of the Omron Photoelectric Sensors range and belongs to the Omron E3NC Series.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3NC-SA21 2M |
Omron E3NC-SA21 2M Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensor | Compact Laser Sensor |
| Output | NPN |
| Number Of Digital Outputs | 2 outputs |
| Number Of Digital Inputs | 1 input |
| Separate Amplifier Classification | Amplifier Unit |
| Power Supply Voltage | 10 to 30 VDC |
| Connection Method | Pre Wired Cable, 2M Length |
| Power Consumption | 1920 mW max. |
| Control Output | NPN |
| Operation Mode | Light-ON/Dark-ON |
| Response Time | 1.5 ms max. |
| Timer Function | Select from timer disabled, OFF-delay, ON-delay, one-shot, or ON-delay + OFF-delay timer: 1 to 9,999 m |
| Indicators | Main Digital Display (White), Sub-Display (Green), OUT indicator (Orange), L/D indicator (Orange), ST indicator (Blue), DPC indicator (Green), OUT selection indicator (Orange) |
| Protective Circuit | Output short-circuit protection |
| Ambient Temperature (Operating) | -25 to 55 ℃ |
| Ambient Temperature (Storage) | -30 to 70 ℃ |
| Ambient Humidity Range | 35 to 85% |
| Insulation Resistance | 20 M ℃ (at 500 VDC) |
| Dielectric Strength | 1000 VAC 50/60 Hz 1 min |
| Vibration Resistance | 10 to 55 Hz |
| Shock Resistance | 500 m/s2 3 times |
| Material | Case: Polycarbonate Cover: Polycarbonate Cable: Polyvinyl chloride (PVC) |
| Weight | Approx. 115 g |
The E3NC-SA21 2M Smart Laser Sensor is designed for stable and accurate object detection in industrial automation systems. This photoelectric sensor integrates an amplifier unit with 2 output channels, 1 control input, and NPN switching, supporting reliable signal processing in control panels. Its Smart Laser Sensors technology enables consistent detection performance across varying operating conditions.
In practical applications, the E3NC-SA21 2M Photoelectric Sensor is used in packaging machines, conveyor systems, electronic assembly lines, and material handling equipment. The Light-ON and Dark-ON modes allow flexible configuration based on installation needs, while the laser-based sensing ensures precise detection of small or low-contrast objects.
The E3NC-SA21 2M operates within a 10–30 VDC range and uses a durable 2-meter pre-wired cable for easy installation. As part of the Omron E3NC Series, this Smart Laser Sensor supports long-term industrial use through stable electrical performance, compact design, and compatibility with modern automation systems.
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