Skip to main content
Log in
Omron E3S-AT61 — Photoelectric Sensors

Omron E3S-AT61 Through-Beam Sensor, 7m, NPN

MPNE3S-AT61

Omron E3S-AT61 through-beam sensor, 7 m range, NPN DO/LO output, 500 µs response, 700 nm red LED.

$144.00 – $157.73Ref. price · indicative, final on quote
Omron E3S-AT61 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

E3S-AT61 — Sensing
ParameterValue
Sensing methodThrough-Beam
Sensing distance275.591" (7m)
Response time500µs
Light sourceRed (700nm)
E3S-AT61 — Other specifications
ParameterValue
Product typeSensor Through-Beam 7M NPN DO/LO
Adjustment typeTwo-Turn Endless Adjuster with an Indicator

Product details

Omron E3S-AT61 — Direct Spare for Through-Beam Lines

Omron E3S-AT61 is a through-beam photoelectric sensor rated for 7 m sensing range, NPN output with DO/LO (Light-ON/Dark-ON selectable), and a 500 µs response. The 700 nm red LED is easy to align – the two-turn endless adjuster with indicator gets the beams squared away without crawling behind the panel. If you're topping up the spare cabinet for an older Omron through-beam install, this is the NPN version you want.

Install and Align

Through-beam needs the emitter and receiver aligned on a common axis. The two-turn endless adjuster with indicating LED simplifies setup even when access is tight. At 500 µs response, the sensor handles part detection on conveyors at moderate line speeds without missing targets.

Frequently asked questions

What is the sensing range and response time of the Omron E3S-AT61?

Buyers must confirm 7 m range and 500 µs response match their application before quoting or installing.

How do you wire the E3S-AT61 NPN dark-on/light-on output to a PLC?

DO/LO logic selection and 3-wire NPN wiring differ from PNP variants and drive correct PLC input mapping.

What is the difference between E3S-AT61 and E3S-AT81, and is there a direct replacement?

Cross-reference and variant comparison are the highest-volume buying decisions for installed-base migration.

Is the Omron E3S-AT61 obsolete, and what is its current lifecycle status?

Lifecycle, EOL/PCN and last-time-buy data determine whether to stock, qualify an alternate, or place final orders.

What is the current E3S-AT61 price, stock, and lead time from authorized distributors?

Sourcing decisions hinge on live authorized stock, MOQ, and lead time versus gray-market allocation risk.

Does the E3S-AT61 have an IO-Link version or safety/SIL rating?

No IO-Link firmware path and lack of SIL/PL data block its use in safety or smart-sensor retrofits.

MPN
E3S-AT61