Omron EE-SPX843 Photomicrosensor
Omron EE-SPX843 is a compact through-beam photomicrosensor designed around a fixed 3.6 mm sensing slot. The transmitting and receiving sections establish a modulated optical path across the gap, allowing the NPN switching state to change when a target passes through the opening. Light-ON operation determines the output response, while operating power is supplied from 5 to 24 VDC. Average current consumption is specified at 15 mA maximum, with a peak value of 50 mA maximum. The output supports up to 50 mA load current, and a 4-pole connector provides detachable electrical integration. A red indicator supplies visual operating status. The EE-SPX843 fits the compact grooved sensor range across Omron Photomicrosensor Products.

| Brand | Omron |
| Product | Photomicro Sensors |
| Model Number | EE-SPX843 |
Omron EE-SPX843 Photomicrosensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Throughbeam with slot |
| Sensing Distance | 3.6 mm |
| Power Supply Voltage | 5 to 24 VDC |
| Control Output (Output Type) | NPN |
| Connection Method | Connector (4 poles) |
| Current Consumption | Average value: 15 mA max. Peak: 50 mA max. |
| Operation Mode | Light-ON |
| Control Output (Residual Voltage) | at 50 mA load current: 1.0 V max. at 10 mA load current: 0.4 V max. |
| Control Output (Load Current) | 50 mA max. |
| Indicator | Light indicator (red) |
| Luminous Method | Modulated |
| Ambient Temperature (Operating) | -10 to 55 ℃ |
| Ambient Temperature (Storage) | -25 to 65 ℃ |
| Ambient Humidity (Operating) | 5 to 85 % |
| Ambient Humidity (Storage) | 5 to 95 % |
| Vibration Resistance | Destruction: 10 to 55 Hz, 1.5 mm double amplitude each in X, Y, and Z directions for 2 h |
| Shock Resistance | Destruction: 500 m/s2 for 3 times each in X, Y, and Z directions |
| Degree Of Protection | IP50 |
| Material | Case: Polycarbonate (PC) Holder: Polycarbonate (PC) |
The Omron EE-SPX843 Photomicrosensor uses through-beam sensing across a fixed 3.6 mm slot and provides Light-ON switching through an NPN output. As an object enters the sensing gap, the optical path across the slot changes and the sensor provides the corresponding output state. It operates from a 5 to 24 VDC supply and has average current consumption of 15 mA max., with a stated peak current of 50 mA. Maximum load current is 50 mA, while residual voltage is specified at 1.0 V max. with a 50 mA load and 0.4 V max. with a 10 mA load. A red light indicator provides operating status. The optical signal is modulated, and this model uses a 4-pole connector for electrical connection.
The EE-SPX843 uses polycarbonate for both the case and holder and has an operating temperature range of -10°C to 55°C. Storage temperature is specified from -25°C to 65°C. Its mechanical specifications include vibration resistance from 10 to 55 Hz at 1.5 mm double amplitude for two hours in each X, Y, and Z direction, together with shock resistance of 500 m/s² three times along each axis. The enclosure is rated IP50. The 3.6 mm sensing slot and 4-pole connector make this model suitable where a fixed slot position and Light-ON NPN signal are required in a compact mechanism. For another Light-ON through-beam slot option with a larger 5 mm sensing gap, see the Omron EE-SPX841.


