Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Sensor Type | Through-Beam Photoelectric |
| Detection Method | Infrared Slot Photocoupler |
| Operating Voltage | 3.3V - 5V DC |
| Output Signal | Digital TTL Level |
| Slot Width | 5mm |
| Response Time | < 10 microseconds |
| Max Counting Frequency | 20 kHz |
| LED Indicator | Yes (Power and Signal) |
| Mounting Hole Distance | 14mm |
| Application | Smart Car Speed Measurement & Motor Encoder |
Anonymous
Mar 28, 2026
Rating: 4/5
Good value, precise detection
I bought two of these for a differential drive robot. The infrared beam is strong and the slot size is perfect for standard encoder disks. One star off because the mounting holes are slightly tight, but overall great quality.
Anonymous
Mar 16, 2026
Rating: 4/5
Works as described
The sensor detects interruptions in the beam instantly. I used it to measure the RPM of a DC motor and the data was consistent. Just ensure your power supply is stable for best results.
Anonymous
Mar 16, 2026
Rating: 5/5
Perfect for my robotics project
This sensor works flawlessly with my Arduino-based smart car. The response time is incredibly fast, allowing for accurate speed calculations even at high motor RPMs. Easy to wire and very stable.
Anonymous
Mar 15, 2026
Rating: 5/5
Essential for motor control
Using this as an encoder counter for a PID control loop. It provides clean digital signals without any noticeable jitter. Highly recommended for university projects or DIY automation.
Anonymous
Mar 07, 2026
Rating: 5/5
Reliable and compact
We use these in our workshop for various conveyor belt speed monitoring tasks. They are small, durable, and the LED indicators make troubleshooting very easy. No false triggers so far.
Anonymous
Mar 04, 2026
Rating: 5/5
Excellent precision
Better than expected for the price. The through-beam design ensures that dust or ambient light doesn't interfere with the readings. My smart car now navigates corners much smoother thanks to accurate speed feedback.
Q: Can this sensor work directly with a 3.3V microcontroller like ESP32?
A: Yes, the module operates within a 3.3V to 5V range, making it fully compatible with ESP32, Arduino, and Raspberry Pi GPIO pins without needing level shifters.
Q: How do I connect this to count pulses?
A: Connect VCC to power, GND to ground, and the OUT pin to a digital interrupt pin on your microcontroller. You can then use a pulse counting library or interrupt service routine to tally the rotations.
Q: What is the maximum width of the object that can pass through the slot?
A: The slot width is approximately 5mm. Any opaque object thinner than 5mm that can interrupt the infrared beam will be detected effectively.
Q: Does this come with a pre-slit encoder disk?
A: No, this package includes only the photoelectric sensor module. You will need to provide your own encoder disk or slotted wheel to attach to your motor shaft.
Q: Is the output active high or active low when the beam is blocked?
A: Typically, the output goes Low (0V) when the beam is blocked and High (VCC) when the beam is clear, but please check the specific datasheet included in the package for your batch verification.
Orthodontic Retainer Case for Invisible Braces, Portable Storage and Cleaning Box for Teeth Aligners and Dentures
$23.10
Portable Retainer Case for Braces, Orthodontic Clear Aligner Storage Box with Chewie and Removal Tool
$3.98
Freestanding Multi-Tier Toilet Storage Rack for Bathroom, Laundry, and Balcony Organization
$174.00
Biliansheng Hair Transplant and Care - Herbal Hair Nourishment Treatment Package
$480.00
Traditional Wooden Rattle Drum with Sheepskin Head for Babies - Chewable Handheld Toy with Fortune Zodiac Design
$11.90
2026 Spring New FLTRP Grade 3 English Vocabulary & Sentence Flashcards for Classroom Teaching
$8.42
Custom Signs and Labels New Version No Smoking Material Signs Five Boards One Diagram Fire Safety Instructions PVC Acrylic Number Plate
$2.00
Water Brush Pen Set with Large Capacity, Gouache and Solid Watercolor Paints, Drawing Tools for Students and Beginners
$32.00
Chineng Commercial Automatic Small Scallion Chopper, Multi-function Vegetable Cutter for Chili Slicing and Filling Preparation in Cafeterias
$16,200.00
G80 Lifting Chain with Hook Head, Manganese Steel Alloy Chain for Hoisting Stones and Towing
$79.00
Car Interior Button Frame and Window Switch Chrome Panel, New Energy Vehicle ABS Parts with Hot Melt Welding and Injection Molding
$96.00
Foldable Multi-Function Tire Stone Removal Tool for Cars
$53.60
Premium 3D Printing Pen RP600A, No Display, Best-Selling Gift for Kids, 3D Pen RP6
$230.15
Marie's Thickened 8K Watercolor Pad, 16K Portable Sketchbook for Beginners and Art Students - Travel-friendly Multi-use Painting Book
$7.23
Car Tire Stone Removal Hook - Stainless Steel Multi-Function Tool for Cleaning Pebbles from Treads
$3.80
Premium Thickened 50% Wool Felt Mat for Calligraphy and Chinese Painting - Dedicated Tablecloth for Four Treasures of the Study; Ideal for Student Practice
$2.59
Fish Chunk Meat Tumbling Mixer Dried Meat Seasoning Mixer Red Oil King Oyster Mushroom Mixing Machine Yikang Machinery
$17,419.00
Custom Company Door Plaques, Bronze Plates, Outdoor Stainless Steel Signs, Factory Display Boards, Metal Advertising Signs with Etched Customization
$25.50
Blower Motor for BMW 5 Series, 6 Series, 7 Series, 8 Series, F90 M5, G Chassis
$480.00
Large Size Thickened Felt Mat for Calligraphy, Wool Felt Pad for Brush Practice, Traditional Chinese Painting Desk Mat
$13.50
Creative Studio Sign Custom Door Plate Company Billboard LOGO Design Storefront Display
$119.00
Router Storage Box, Cable Organizer, WiFi Set-Top Box Stand, Gigabit Broadband Shelf with Wall Mount
$23.60
Baby Rattle with Teether for 0-6 Month Newborns, Sand Shaker and Hand Drum for Visual and Auditory Tracking
$10.50
Splicable Folding Food Warmer Partition Temperature Control Insulation Plate Hot Dish Plate Induction Cooker Plate Constant Temperature Heating Food Warmer Table Mat
$315.00
Marie's Kneaded Eraser Cotton for Sketching, Student-Use Blending Stump, Makeup Sponge for Art Students, Paper Blending Tool, Soft Absorbent Water-Drop Sponge Ball for Sketching
$8.33
Soft Cheese Processing Equipment, Lab-Type Cheese Stretching and Mixing Machine, Multi-Function Hot Water Stretching Unit
$210,210.00
Imported IKO Needle Roller Bearings TAF121912, 121915, 121916, 142212, 142216, 142220
$26.00
Portable Watercolor Sketchbook – 100% Cotton Mini Square Pocket Book for Travel, On-the-Go Sketching, Tear-Off Art Pages
$10.90
Dongguan Rotary Pad Printer Manufacturer - Fully Automatic 4-Station Pad Printer for Plastic, Metal, Text, Patterns, and Logos
$500.00
Custom Solid Wood Plaque, Antique-Style Wooden Sign with Engraving, Shop Signboard, Couplet, Carved Wood Plaque
$17.00
![[Trial Pack] Xianlang Complete Cat Treat Sticks Meal Packs Main Course Cans Freeze-Dried Cat Food Sample Snacks Gift Set](https://www.gosteppe.com/cache/medium/product/208273/legacy-main-9ec245ebf781f65a434ba854.webp)
