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Home / Sensors / Photoelectric Switch Sensor, Photoelectric Sensor ITR-9608, Slot-Type Optocoupler, Through-Beam Photoelectric Switch

Attributes

Brand -
Category Robotics / STEM Teaching Tools / Sensors
Origin -
Model Number ITR-9608
Sensor Type Through-Beam Photoelectric
Output Configuration Phototransistor
Slot Width 8.0 mm
Operating Voltage 5V to 24V DC
Response Time Max 100 µs
Forward Current 50 mA
Housing Material Black Plastic (PBT)
Mounting Style PCB Through-Hole
Operating Temperature -25°C to +85°C

6 reviews

A

Anonymous

Mar 30, 2026

Rating: 5/5

Perfect for my conveyor project

These sensors work flawlessly. The 8mm slot is exactly what I needed for counting small parts on my mini conveyor belt. Response time is incredibly fast.

A

Anonymous

Mar 27, 2026

Rating: 4/5

Good value, easy to solder

Solid build quality and the pins are well-spaced for standard PCBs. Only giving 4 stars because the datasheet could be more detailed regarding ambient light immunity.

A

Anonymous

Mar 26, 2026

Rating: 4/5

Works as advertised

No complaints about performance. The infrared beam is strong and consistent. Just make sure you align the emitter and receiver perfectly during installation.

A

Anonymous

Mar 26, 2026

Rating: 5/5

Reliable industrial component

We used a batch of these for a prototype machine. They have been running 24/7 for three months without a single false trigger. Highly recommended.

A

Anonymous

Mar 06, 2026

Rating: 5/5

Great for university robotics

Used this for our final year robot obstacle detection system. It's much more reliable than ultrasonic sensors for close-range detection.

A

Anonymous

Mar 04, 2026

Rating: 5/5

Excellent sensitivity

The detection threshold is very sharp. Objects break the beam instantly, making it ideal for high-speed counting applications.

5 FAQ

Q: What is the current consumption when the beam is unbroken?

A: The forward current for the LED emitter is typically around 20mA to 50mA depending on your series resistor choice. The phototransistor side consumes negligible current when off.

Q: What is the maximum distance the object can be from the sensor to be detected?

A: Since this is a slot-type (through-beam) sensor, the object must pass through the 8mm gap between the emitter and receiver. It cannot detect objects outside this slot.

Q: Can this sensor operate directly with a 3.3V microcontroller like an ESP32?

A: Yes, the ITR-9608 operates within the 5V to 24V range, but the output is open-collector. You will need a pull-up resistor to 3.3V to interface safely with your ESP32 GPIO pins.

Q: Does the package include mounting screws?

A: No, the package contains only the photoelectric switch sensors. Mounting is typically done by soldering the leads directly to a PCB or using custom brackets designed for the housing shape.

Q: Is this sensor suitable for outdoor use in direct sunlight?

A: While the operating temperature range is wide, direct sunlight contains strong infrared radiation which may interfere with the signal. We recommend shielding the sensor or using a modulated IR source for outdoor applications.

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