The Omron EE-SPX403N is a through-beam photomicrosensor in a standard plastic housing with a fixed 13 mm slot width. It uses an infrared LED and outputs NPN (Light-ON) via a connector, running on 12 to 24 VDC. If your BOM calls for a sinking sensor in a tight slot detection spot, this one fits without fuss.
Omron EE-SPX403N Photomicrosensor, NPN, 13mm Slot
MPNEE-SPX403N
Omron EE-SPX403N, Photomicro, NPN, Light-ON, Connector, 13 mm Through-beam Slot Sensor.
$25.78Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Sensing method | Through-beam |
| Type | Photomicro |
| Light source | Infrared LED |
| Parameter | Value |
|---|---|
| Supply voltage | 12 to 24 VDC |
| Parameter | Value |
|---|---|
| Connection | Connector |
| Parameter | Value |
|---|---|
| Output | NPN |
| Body type | Standard |
| Operation | Light-ON |
| Housing material | Plastic |
| Product life cycle | Active |
| Max sensing distance | 13 mm |
Product details
Frequently asked questions
What is the output type of the EE-SPX403N?
It has a NPN output, Light-ON operation.
Will the E3ZM-CT87B work as a direct replacement for the EE-SPX403N?
No. The E3ZM-CT87B has a PNP output (not NPN), a 20 m sensing range (not 13 mm), and a stainless steel body with IP69K – it's a heavy-duty photoelectric sensor, not a slot sensor. The physical form factor and electrical interface are different.
MPN
EE-SPX403N