The E3X-SD21 2M: Simple fiber amplifier unit designed for use with Omron E32-series fiber units (separate fibers). NPN open-collector output switches up to 50 mA on 12 to 24 V DC. Teach-in function sets light- or dark-on thresholds on the fly. Response time under 200 µs keeps up with fast-moving parts on packaging or pick-and-place lines. Rated IP50, housed in PBT, and sized at 64.3 × 31.5 × 10 mm for DIN-rail mounting in a control cabinet. The fixed 2 m lead terminates in bare wire; no connector options are available from this order code.
Omron E3X-SD21 2M Fiber Amplifier, NPN, <200µs
MPNE3X-SD21 2M
Omron E3X-SD21 2M Simple Fiber Amplifier Unit, NPN output, 12...24V DC supply, <200µs response, IP50, PBT body, lead 2m.
$87.63 – $101.00Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Response time | <200µs |
| Parameter | Value |
|---|---|
| Supply voltage | 12...24V DC |
| Parameter | Value |
|---|---|
| Output configuration | NPN |
| Parameter | Value |
|---|---|
| Connection | lead 2m |
| Parameter | Value |
|---|---|
| IP rating | IP50 |
| Operating temperature range | -25...55°C |
| Parameter | Value |
|---|---|
| Body material | PBT |
| Parameter | Value |
|---|---|
| Weight | 0.09 kg |
| Related items | E32-D11L, E32-DC200, E32-T11L, E32-TC200E |
| Type of sensor | optical fibre amplifier |
| Body dimensions | 64.3 x 31.5 x 10mm |
| Operation modes | DARK-ON, LIGHT-ON |
| Sensors features | Teach-in function |
| Max. operating current | 50mA |
Product details
Frequently asked questions
What is the closest functional second-source?
The E3ZM-CT87B is a through-beam photoelectric sensor, not a fiber amplifier, and uses PNP output. It is not a direct functional replacement for the E3X-SD21 2M. The E3X-SD21 2M is a fiber amplifier with NPN output and a different sensing method.
What is the IP rating?
IP50.
Will it drop into a panel specified around E3ZM-CT87B without rewiring?
No. The E3X-SD21 2M is a fiber amplifier with a 2 m lead, while the E3ZM-CT87B is a through-beam photoelectric sensor with an M8 connector. Different form factor, mounting, and wiring; rewiring and a change in mounting approach are required.
MPN
E3X-SD21 2M