EE-SX4320

EE-SX4320 is Omron’s EE-SX family: a compact slotted optical sensor (photointerrupter). It combines an infrared emitter and a detector in a small housing and detects objects by beam interruption across a slot. Typical uses include end stops, encoder/slot-detection, and other non-contact position sensing in automation. Electrical options vary, but most variants run on DC supply (commonly 5–24 V) and output a digital signal (NPN or PNP open-collector). Features often include a status LED and rugged housing for industrial use. For exact sensing distance, wiring, current, and pinout, consult the EE-SX4320 datasheet.

- Pin count: 4 pins
- Pin functions (typical order for EE-SX4320, slot-type opto-interrupter):
- Pin 1: LED anode
- Pin 2: LED cathode
- Pin 3: Phototransistor collector (output)
- Pin 4: Phototransistor emitter (GND)
- Description: Contains an IR LED and a phototransistor in a slotted package; output is an open-collector transistor that requires a pull-up resistor to Vcc.

Manufacturer: Omron Corporation.
Omron is a Japanese multinational company that specializes in automation and control equipment, including sensors, switches, relays, safety devices, and related automation products.

EE-SX4320 is a slot-type infrared optical sensor (photointerrupter) used to detect beam interruptions. Common applications include:
- Rotary encoders and motor/servo feedback
- Position sensing in printers, scanners, copiers
- End-of-travel/limit sensing in automation and robotics
- Sheet-feed, paper presence, and edge detection in printers/copiers
- Conveyor line object detection and counting
- Safety/door interlocks in machinery
- Pick-and-place and other material-handling systems
Concise, non-contact detection for motion, position, and presence.

Through-hole, 4-pin DIP-style package (slotted optical interrupter).