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Business > Industrial Devices > Automation Controls Top > FA Sensors & Components > Sensors > Photoelectric Sensors / Laser Sensors > Ultra-compact Photoelectric Sensor EX-20 Ver.2 > Order guide

Ultra-compact Photoelectric Sensor EX-20 Ver.2

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Order guide

Sensing characteristics

Cautions For Use

Order guide

Type			Sensing range	Model No. (Note 3)	Output	Output operation
Thru-beam		Front sensing	1 m 3.281 ft	EX-21A	NPN open-collector transistor	Light-ON
				EX-21A-PN	PNP open-collector transistor	Light-ON
				EX-21B	NPN open-collector transistor	Dark-ON
				EX-21B-PN	PNP open-collector transistor	Dark-ON
		Side sensing	2 m 6.562 ft	EX-23	NPN open-collector transistor	Switchable either Light-ON or Dark-ON
		Side sensing	2 m 6.562 ft	EX-23-PN	PNP open-collector transistor	Switchable either Light-ON or Dark-ON
Retroreflective		Side sensing	30 to 200 mm 1.181 to 7.874 in (Note 1)	EX-29A	NPN open-collector transistor	Light-ON
				EX-29A-PN	PNP open-collector transistor	Light-ON
				EX-29B	NPN open-collector transistor	Dark-ON
				EX-29B-PN	PNP open-collector transistor	Dark-ON
Diffuse reflective		Side sensing	5 to 160 mm 0.197 to 6.299 in (Note 2)	EX-22A	NPN open-collector transistor	Light-ON
				EX-22A-PN	PNP open-collector transistor	Light-ON
				EX-22B	NPN open-collector transistor	Dark-ON
				EX-22B-PN	PNP open-collector transistor	Dark-ON
Convergent reflective	Diffused beam type	Front sensing	2 to 25 mm 0.079 to 0.984 in (Convergent point: 10 mm 0.394 in)	EX-24A	NPN open-collector transistor	Light-ON
				EX-24A-PN	PNP open-collector transistor	Light-ON
				EX-24B	NPN open-collector transistor	Dark-ON
				EX-24B-PN	PNP open-collector transistor	Dark-ON
	Small spot beam type	Side sensing	6 to 14 mm 0.236 to 0.551 in (Convergent point: 10 mm 0.394 in)	EX-26A	NPN open-collector transistor	Light-ON
				EX-26A-PN	PNP open-collector transistor	Light-ON
				EX-26B	NPN open-collector transistor	Dark-ON
				EX-26B-PN	PNP open-collector transistor	Dark-ON
Narrow-view reflective	Long distance spot beam type	Side sensing	45 to 115 mm 1.772 to 4.528 in	EX-28A	NPN open-collector transistor	Light-ON
				EX-28A-PN	PNP open-collector transistor	Light-ON
				EX-28B	NPN open-collector transistor	Dark-ON
				EX-28B-PN	PNP open-collector transistor	Dark-ON

NOTE	：	Mounting bracket is not supplied with the sensor. Please select from the range of optional sensor mounting brackets (four types) or universal sensor mounting bracket.

Note 1 :	The sensing range of the retroreflective type sensor is specified for the RF-200 reflector. Further, the sensing range is the possible setting range for the reflector. The sensor can detect an object less than 30 mm 1.181 in away. However, if the reflector is set 100 mm 3.937 in or less away, the sensing object should be opaque.
Note 2 :	In case of using this product at a sensing range of 50 mm 1.969 in or less, take care that the sensitivity adjustment range becomes extremely narrow.
Note 3 :	The model No. with "P" shown on the label affixed to the thru-beam type sensor is the emitter, "D" shown on the label is the receiver. (e.g.) Emitter of EX-21A: EX-21P, Receiver of EX-21A: EX-21AD

Package without reflector

Retroreflective type is also available without the reflector RF-200.
When ordering this type, suffix "-Y" to the model No.
(e.g.) Without reflector type of EX-29A-PN is "EX-29A-PN-Y".

Standard type	Package without reflector
EX-29A	EX-29A-Y
EX-29A-PN	EX-29A-PN-Y
EX-29B	EX-29B-Y
EX-29B-PN	EX-29B-PN-Y

5 m 16.404 ft cable length type

5 m 16.404 ft cable length type (standard: 2 m 6.562 ft) is also available for NPN output type (including package without reflector of retroreflective type sensor).
When ordering this type, suffix "-C5" to the model No.
(e.g.) 5 m 16.404 ft cable length type of EX-29A-Y is "EX-29A-Y-C5".

Standard type	5 m 16.404 ft cable length type
EX-21A	EX-21A-C5
EX-21B	EX-21B-C5
EX-23	EX-23-C5
EX-29A	EX-29A-C5
EX-29B	EX-29B-C5
EX-29A-Y	EX-29A-Y-C5
EX-29B-Y	EX-29B-Y-C5
EX-22A	EX-22A-C5
EX-22B	EX-22B-C5
EX-24A	EX-24A-C5
EX-24B	EX-24B-C5
EX-26A	EX-26A-C5
EX-26B	EX-26B-C5
EX-28A	EX-28A-C5
EX-28B	EX-28B-C5