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EX-21B-C5 | Ultra-compact Photoelectric Sensor EX-20 Ver.2

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Ultra-compact Photoelectric Sensor EX-20 Ver.2

*Photo may vary from actual product.

  • RoHS Compliant This product has been confirmed that it does not contain the 6 substances specified in EU RoHS Directive 2011/65/EU and the 4 substances specified in 2015/863/EU. 　


Product Number EX-21B-C5
Part Number EX-21B-C5
Product Ultra-compact Photoelectric Sensor
Details Thru-beam[Front sensing]
Product name Ultra-compact Photoelectric Sensor EX-20 Ver.2

As of April 17, 2024
Specifications and design of the products are subject to change without notice for the product improvement.

Spec Detail

Item Specifications
Product Number EX-21B-C5
Part Number EX-21B-C5
Regulatory compliance CE Marking (EMC Directive, RoHS Directive), UKCA Marking (EMC Regulations, RoHS Regulations)
Sensing range 1 m 3.281 ft
Sensing object Min. dia. 2.6 mm dia. 0.102 in opaque object (Setting distance between emitter and receiver: 1 m 3.281 ft)
Hysteresis -
Repeatability(perpendicular to sensing axis) 0.05 mm 0.002 in or less
Supply voltage 12 to 24 V DC plus or minus 10 % Ripple P-P 10 % or less
Current consumption Emitter: 10 mA or less
Receiver: 10 mA or less
Output NPN open-collector transistor
- Maximum sink current: 50 mA
- Applied voltage: 30 V DC or less (between output and 0 V)
- Residual voltage: 2 V or less (at 50 mA sink current), 1 V or less (at 16 mA sink current)
Output:Utilization category DC-12 or DC-13
Output:Short-circuit protection Incorporated
Response time 0.5 ms or less
Operation indicator Orange LED (lights up when the output is ON) (located on the receiver)
Stability indicator Green LED (lights up under stable light received condition or stable dark condition), located on the receiver
Sensitivity adjuster -
Operation mode switch -
Protection IP67 (IEC)
Ambient temperature -25 to +55 degrees -13 to +131 degrees Fahrenheit (No dew condensation or icing allowed), Storage: -30 to +70 degrees -22 to +158 degrees Fahrenheit
Ambient humidity 35 to 85 % RH, Storage: 35 to 85 % RH
Ambient illuminance Incandescent light: 3,000 lx or less at the light-receiving face
Voltage withstandability 1,000 V AC for one min. between all supply terminals connected together and enclosure
Insulation resistance 20 MOhm , or more, with 250 V DC megger between all supply terminals connected together and enclosure
Vibration resistance 10 to 500 Hz frequency, 3 mm 0.118 in double amplitude (20 G max.) in X, Y and Z directions for two hours each
Shock resistance 500 m/s2 acceleration (50 G approx.) in X, Y and Z directions three times each
Emitting element Red LED (modulated)
Emitting element:Peak emission wavelength 640 nm 0.025 mil
Material Enclosure: Polyethylene terephthalate
Lens: Polyalylate
Cable 0.1 mm2 3-core (emitter: 2-core) cabtyre cable, 5 m 16.404 ft long
Cable extension Extension up to total 50 m 164.042 ft is possible with 0.3 mm2, or more, cable (both emitter and receiver).
Accessory -

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Accessories (Option)

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Product Number MS-EX20-1
Part Number MS-EX20-1
Product name Mounting bracket
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Product Number MS-EX20-3
Part Number MS-EX20-3
Product name Mounting bracket
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Product Number MS-EX20-FS
Part Number MS-EX20-FS
Product name Universal sensor mounting bracket


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