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Omron E3T-SL21M — Photoelectric Sensors

Omron E3T-SL21M Photoelectric Sensor, NPN, 5-30mm, 12-24VDC

MPNE3T-SL21M

Omron E3T-SL21M Ultracompact Convergent-Reflective Photoelectric Sensor, NPN, 5 to 30 mm Sensing Distance, 12-24 VDC, 1 ms Response.

$119.00 – $205.00Ref. price · indicative, final on quote
Omron E3T-SL21M datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

E3T-SL21M — Sensing
ParameterValue
Sensing methodConvergent-reflective
Sensing distance5 to 30 mm(50 × 50 mm white paper)
Response timeOperate or reset: 1 ms max

Product details

What you're getting

E3T-SL21M is a current-production ultracompact convergent-reflective photoelectric sensor with built-in amplifier, NPN open-collector output. Senses objects from 5 to 30 mm (50 × 50 mm white paper). Responds in 1 ms max. Runs on 12 to 24 VDC ±10%. Output handles 50 mA max at 26.4 VDC. Includes reverse polarity, short-circuit, and mutual interference protection. Typical lead time 1-10 working days.

Frequently asked questions

What is E3T-SL21M's listed item (NPN) on this component line?

The listed item is NPN (open-collector output).

What is E3T-SL21M's listed weight?

Unit weight is 0.02 kg; shipping weight is 1 kg (bulk packaging).

Will E3T-SL21M drop into a panel that was specified around E3T-SL24 without rewiring?

No — the output polarity differs: E3T-SL21M is NPN, E3T-SL24 is PNP. Wiring and PLC input card must be compatible with NPN.

MPN
E3T-SL21M