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Omron E3S-AT21-D — Photoelectric Sensors

OMRON E3S-AT21-D Through-Beam Receiver, 7 m, NPN

MPNE3S-AT21-D

OMRON E3S-AT21-D Through Beam Photoelectric Sensor – Receiver, 7 m operating range, NPN selectable Dark-ON/Light-ON, 10-30 V DC, cable connector.

Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

E3S-AT21-D — Identification
ParameterValue
ModelE3S-AT21-D
E3S-AT21-D — Sensing
ParameterValue
TypeThrough Beam Photoelectric Sensor – Receiver
E3S-AT21-D — Electrical
ParameterValue
Operating voltage range10 … 30 V DC
E3S-AT21-D — Environmental
ParameterValue
Operating temperature range-25 … 55 °C
E3S-AT21-D — Specifications
ParameterValue
Electrical DesignNPN
Connector typeCable
ConditionUsed
E3S-AT21-D — Other specifications
ParameterValue
Weight0,04 kg
HousingRectangular
Shelf no.230105
Operating range7 m
Switching outputDark-ON/Light-ON – Selectable

Product details

OMRON E3S-AT21-D is a through-beam photoelectric sensor receiver with a 7 m operating range. It outputs an NPN signal with selectable Dark-ON or Light-ON logic, powered by 10-30 V DC. The cable connector and rectangular housing make it a direct fit for existing through-beam installations.

Rated for -25 to 55 °C ambient. Cable connection – verify polarity for NPN output and power supply before energizing.

MPN
E3S-AT21-D