Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Model Number | E18-D50NK |
| Detection Type | Diffuse Reflective |
| Detection Range | 3cm to 50cm (Adjustable) |
| Operating Voltage | DC 3.3V - 5V |
| Output Signal | Digital Switching (NPN) |
| Indicator LED | Power and Detection Status |
| Potentiometer | Adjustable Sensitivity Control |
| Response Time | < 2ms |
| Mounting Hole Distance | 14mm |
| Application | Robot Obstacle Avoidance, Line Tracking |
Anonymous
Mar 29, 2026
Rating: 5/5
Reliable and compact
I bought five of these for a line-following car modification. They are small, lightweight, and the output signal is clean. Highly recommended for DIY electronics enthusiasts.
Anonymous
Mar 21, 2026
Rating: 5/5
Standard component for a reason
This is the industry standard for beginner to intermediate robotics. Reliable performance, easy to source, and the E18-D50NK model specifically offers a nice adjustable range compared to fixed versions.
Anonymous
Mar 18, 2026
Rating: 4/5
Good value but needs calibration
Great little module for the price. It took a few minutes to get the sensitivity right using the screwdriver adjustment, but once set, it reliably detects obstacles within the specified range.
Anonymous
Mar 16, 2026
Rating: 5/5
Perfect for my Arduino robot
This sensor works flawlessly with my Arduino Uno project. The detection range is consistent, and the potentiometer makes it very easy to fine-tune the sensitivity for different lighting conditions.
Anonymous
Mar 11, 2026
Rating: 4/5
Works as described
Simple to wire up: VCC, GND, and OUT. The green LED indicates power and the red one lights up when an object is detected. Just remember it works best on non-black surfaces.
Anonymous
Mar 03, 2026
Rating: 5/5
Exceeded expectations
The build quality is surprisingly good for the cost. The IR emitter and receiver are well-shielded from cross-talk. It handles ambient light better than some more expensive sensors I've tried.
Q: How do I adjust the detection distance?
A: There is a blue potentiometer on the back of the module. Use a small Phillips head screwdriver to turn it clockwise to increase the detection range or counter-clockwise to decrease it while testing with an object.
Q: Can this sensor detect black objects effectively?
A: Infrared sensors generally struggle with black objects because they absorb most of the IR light. You may need to increase the sensitivity significantly or ensure strong lighting, but detection of matte black surfaces at long ranges is not guaranteed.
Q: Is the output compatible with 3.3V logic boards like ESP32?
A: Yes, the module operates on a voltage range of 3.3V to 5V, and the digital output is compatible with 3.3V logic levels, making it safe to connect directly to ESP32 or Raspberry Pi GPIO pins.
Q: What is the maximum current draw for this module?
A: The typical operating current is around 15mA to 20mA when the LED indicator is on and an object is detected. Please ensure your microcontroller pin can supply enough current or use an external power source.
Q: Does this work outdoors in direct sunlight?
A: Direct sunlight contains a lot of infrared radiation which can interfere with the sensor's accuracy. It is recommended to use a shield or tube to block ambient light if you plan to use it outdoors.
Yuan Dynasty Calligraphy by Zhao Mengfu - Small Regular Script Diamond Sutra Brush Tracing Long Scroll Copybook, Original Version, Wholesale and Customization Available
$15.00
Kodak Photo Printing Service - High-Definition Prints from Your Phone with Lamination and Album Binding
$12.47
Shenzhen Custom Storefront Signage and Lightbox Installation - Illuminated Letters and Shop Plaques
$50.00
Automotive AC Refrigerant Gauge Set – R134a Pressure Meter with Dual Valve Tool for Home R22/R410 Air Conditioning Systems
$329.00
Complete Collection of Taoist Talisman Art Copybooks - Zhengyi Thirty-Six Generals, Calligraphy Practice Sheets with Stroke Order and Red Tracing, Classic Taoist Calligraphy
$38.00
Marie's Blending Knife Replacement Head Set Sketch Blending Tools Sponge Stumps Paper Stumps for Art Students
$4.25
French Imported Arches Watercolor Paper - Handmade 100% Cotton, 300g-850g, Medium/Rough Grain, Extra-Large Rolls and Sheets (4K, Full, Half, Quarter)
$33.10
Commercial Countertop Food Warmer Display Case - For Fried Chicken, Burgers, Egg Tarts, Pies, Youtiao, and Shaobing
$720.00
Integrated Hospital Wastewater Treatment Unit Underground Integrated Sanitary System Sewage Discharge Unit Eco-Friendly Wastewater
$10,000.00
Double Loop Lifting Chain with Rebar Bottom Hook - Manganese Steel Sling for Heavy Duty Rigging
$29.00
Screw Press Screw Sludge Dewatering Machine Sewage Treatment Equipment Rotary Type
$17,600.00
Imported INA Needle Roller Bearings: 9NA, NA 2940, 4R22, 4924, 4926, 4928, 4930-XL A
$109.00
High-Purity Nitrogen Generator for Reflow Soldering and Wave Soldering - Efficient Energy-Saving Transformer Protection for Electronics Factories
$46,100.00
Baohong Watercolor Paper 300g Wood Pulp Medium Grain A3 Full Sheet, Coarse/ Fine Grain Academy Grade 4K, A2, A1, A4 Artist Paper 2K for Art Students
$3.40
Manyue Handmade Natural Soy Wax and White Beeswax for DIY Low-Temperature Scented Candles – Includes Candle Cups and Jelly Wax
$5.46
Car Tire Stone Removal Tool Hook and Rake for Cleaning Tread Debris
$4.53
Caiyan Blending Sticks for Oil Pastels and Sketching, Dual-Tip Soft Wax Crayon Tools for Art Students, DIY Smudging, Highlighting, and Color Mixing
$8.20
Aizaofang Six-Cavity Leaf Stamp Silicone Mold for DIY Handmade Soap, Approx. 108g per Bar
$16.90
Sea to Summit Outdoor Rafting Waterproof Dry Bag Storage Backpack for Clothes, Large River Waterproof Bag 420D
$83.30
Natural 5A Gold Rutilated Quartz Loose Beads - DIY Crystal Jewelry Making Supplies, Round Single Beads
$2.56
Rubber Cable Raceway and Speed Bump with Movable Cover
$31.44
Manufacturer Shaftless Conveyor Uniform Transport No Backflow Customizable Sizes Two-Year Warranty
$7,455.00
Curved Commercial Steamed Bun Machine - Small Glass Display Cabinet for Convenience Stores, Mantou Warmer, Baozi Steamer, Corn Warmer
$338.00
U-Shaped Rubber Sealing Strip, N-Edge Rubber Strip, Edge Wrapping Strip, Iron Sheet Decorative Strip, Rubber Edge Sealing Strip
$102.00
Rongbaozhai Calligraphy Felt Mat - Creative Printed Desk Pad for Brush Writing and Chinese Painting
$14.20
Car Tire Stone Hook, Multi-Function Rust-Resistant Tool for Removing Stones, Picking, and Scraping Tire Debris
$8.33
Hanmo Brocade Wrist Rest Traditional Four Treasures Study Gourd-Shaped Arm Pad Calligraphy Hand Pillow Artistic Fresh Wrist Rest
$9.10
West Coast Chicano Script Art, Glowing Decorative Painting for Shop Opening Gifts and Living Room Background Walls
$430.00
G80 Heavy Duty Chain SHQ - 2m/6m/8m/10m Short Chains for Manual Chain Hoists
$8.51
Commercial Food Warmer Small Heating Thermostat Display Cabinet Countertop Chestnut Egg Tart Bread Glass Cooked Food Cabinet
$188.00
![[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)
