Compared to the E3Z-LT81 through-beam pair (60 m range), this E3S-RS30E4-30 is a single-unit sensor with a 0.3 m ceiling. The E3Z-LT81 needs an emitter and receiver wired separately; this one lands with a single cable and a reflector. You cannot drop one into a panel built for the other — the sensing range alone tells you the application is different.
Omron E3S-RS30E4-30 Photoelectric Sensor, 0.3m, NPN
MPNE3S-RS30E4-30
Omron E3S-RS30E4-30 Photoelectric Sensor, NPN, 0.3 m range, 12-24 VDC, IP67, cable 2 m.
$193.40Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| Parameter | Value |
|---|---|
| Model | E3S-RS30E4-30 |
| Parameter | Value |
|---|---|
| Type | Photoelectric Sensor |
| Parameter | Value |
|---|---|
| Supply voltage | 12 … 24 VDC |
| Parameter | Value |
|---|---|
| Output configuration | NPN |
| Parameter | Value |
|---|---|
| Connection | Cable, 2m |
| Parameter | Value |
|---|---|
| Condition | New |
| Parameter | Value |
|---|---|
| Range | 0…0.3 m |
| Weight | 0,14 kg |
| Dimensions | 23 x 20.4 x 55 mm |
| Materials | metal |
| Shelf no. | 241203 |
| Operating temperature | -25° to 55°C |
| Operation mode | Light-ON/Dark-ON, switch selectable |
| Type of product | Photoelectric Sensor |
| IP rating | IP67 |
Product details
Frequently asked questions
What is its key rating?
It has a sensing range of 0 to 0.3 m, NPN output, and IP67 protection.
Will the E3S-RS30E4-30 replace an E3Z-LT81 in an existing panel?
No. The E3Z-LT81 is a through-beam pair with a 60 m range, while this sensor is a single unit with a 0.3 m range. The wiring and mounting differ.
MPN
E3S-RS30E4-30