Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Operating Voltage | DC 4.5V - 20V |
| Detection Distance | 3 to 7 meters (adjustable) |
| Detection Angle | < 120 degrees cone angle |
| Trigger Mode | L (Non-repeatable) / H (Repeatable) jumper selectable |
| Delay Time | 5s to 300s (adjustable via potentiometer) |
| Block Time | 2.5 seconds (default, adjustable) |
| PCB Dimensions | 32mm x 24mm |
| Lens Type | Fresnel Lens included |
| Working Temperature | -15°C to +70°C |
| Output Signal | High level 3.3V / Low level 0V |
Anonymous
Mar 27, 2026
Rating: 5/5
Perfect for Arduino projects
This sensor works flawlessly with my Arduino Uno. The detection range is accurate, and the adjustment pots make it easy to fine-tune sensitivity and delay time. Great value for money.
Anonymous
Mar 24, 2026
Rating: 5/5
Reliable and cheap
Bought five of these for a university robotics project. All of them worked out of the box. The documentation online is plentiful, making integration very straightforward.
Anonymous
Mar 22, 2026
Rating: 4/5
Good sensitivity, needs calibration
Works well for my automatic hallway light project. Initially, it was too sensitive to heat changes, but after adjusting the potentiometer, it performs exactly as needed.
Anonymous
Mar 21, 2026
Rating: 5/5
Fast shipping, great product
Arrived quickly and was well packaged. Tested immediately upon arrival and the LED indicator responded instantly to motion. Highly recommended for hobbyists.
Anonymous
Mar 14, 2026
Rating: 4/5
Solid component
Standard HC-SR501 module. Nothing fancy, but it does the job perfectly. Just ensure you provide a stable 5V power supply to avoid false triggers.
Anonymous
Mar 07, 2026
Rating: 5/5
Excellent motion detector
I use this to trigger a camera trap in my garden. It ignores small animals but picks up human movement reliably. The repeatable trigger mode is a great feature.
Q: Is this sensor waterproof for outdoor use?
A: No, the PCB and components are not waterproof. If used outdoors, you must house the module in a weatherproof enclosure with a clear window for the IR signal.
Q: Can I adjust the detection distance?
A: Yes, there is a potentiometer labeled 'Distance' on the board. Turning it clockwise generally increases the detection range, while counter-clockwise decreases it.
Q: What is the difference between L and H trigger modes?
A: In 'H' (Repeatable) mode, the output remains high as long as motion is detected. In 'L' (Non-repeatable) mode, once triggered, the output goes high for the set delay time and will not re-trigger until the block time has passed, even if motion continues.
Q: Can this sensor work directly with a 3.3V microcontroller like ESP8266?
A: Yes, the output high level is 3.3V, so it is compatible with 3.3V logic systems. However, ensure the input voltage to the module itself is within the 4.5V-20V range for stable operation, or use a dedicated 3.3V version if available.
Q: Does this come with the Fresnel lens attached?
A: Yes, the white dome-shaped Fresnel lens comes pre-installed on the module to focus infrared radiation onto the sensor element.
Greenhouse Soil-Free Strawberry Growing Trough - PVC Elevated Hydroponic Channel with Drainage Outlet for Aerial Planting
$6.80
Marie's Sketch Blending Knife Set for Highlights, Shadows, and Quick Sketches - Professional Art Student Smudging Tools with Sponge Blenders, Paper Stumps, and Full Correction Kit for Drawing and Tracing
$9.25
Meiao Dental Imported Implant Package: Swiss ITI Straumann Implant Abutment and Prosthetic Teeth
$5,955.00
Bottled Water Faucet Stand, Large Water Jug Dispenser Rack, Pure Water Bucket Holder with Inverted Drinking Cover
$7.13
Dust Extraction Sanding Table - Industrial Pulse Cartridge Collector for Polishing, Stone, and Woodworking Dust
$600.00
Diamond Tire 255/45R20
$518.00
Amusement Park Suspension Bridge - 15m/20m/25m/30m Viral Swing Bridge with Iron and Steel Chains
$58.00
Paint Spray Catalytic Combustion Equipment - Industrial Exhaust Gas Treatment Device - Activated Carbon Adsorption/Desorption CO Catalytic Combustion
$324,999.00
Car Wheel Tire Bolt Rust-Proof Cap Universal Size 17 19 21 Decorative Dust-Proof Protective Cap Cover
$15.70
Commercial Electric Vegetable Slicer - Multi-Function Stainless Steel Machine for Potatoes and Canteens
$2,017.28
Irregular Ticket Stub Watercolor Paper Stamp Blank Drawing Paper 300g Cotton Pulp Fine Texture Thickened with Serrated Edges Specialized Paper for Art Students
$5.60
Stainless Steel Electric Buffet Warmer with Visible Lid - Square Flip-Top Chafing Dish for Hotels
$251.70
Baohong Cotton Pulp Watercolor Paper Pad 300g Cold/Hot Press, Glued on Four Sides, 16K/8K - Premium Full Cotton Art Paper for Oil Pastels and Professional Artists (Baoding, China)
$17.00
ORDER Industrial Large Roll Wiper Paper Dispenser, TORK Multi-Convenience Roll Stand
$170.00
Lifting Chain Slings Manufacturer, MHU Lifting Gear, G80 Manganese Steel Hoisting Chains, Single and Double Leg Sets
$835.00
Multi-Function Bathroom Storage Rack for Toilet, Washroom, and Sanitary Supplies, Over-Toilet Home Organizer
$20.30
Portable Travel Art Set for Kids - Watercolor Paint Box with Sketchbook and Mini Drawing Board
$9.05
Pneumatic Fitting PU Straight Connector Quick-Insert Plastic High-Pressure Air Hose Fitting PU-4681012
$4.90
Chain Sling Lifting Shackle Steel Chain Single Leg with Hooks on Both Ends for Towing, 2m Length, 5 Ton Capacity
$79.00
Large Brush Set Supply - Watercolor Pen Set for Children's Day Painting, Art, and Coloring
$25.55
Non-Bleeding Liquid Candle Dye - Macaron Colors for Soy Wax DIY Aromatherapy Candles
$21.00
Alloy Wheel Lug Nut Caps Compatible with Buick Excelle, Verano, Regal, LaCrosse, Encore, Cruze, Malibu, and GL8
$3.40
![[Damai Holds Micro-Needle Hair Transplant Patent] AI Robot Precision Hair Transplant | 1000 Units Hairline Planting](https://www.gosteppe.com/cache/small/product/269438/legacy-main-d695e1be3b1b8212f24ac863.webp)
[Damai Holds Micro-Needle Hair Transplant Patent] AI Robot Precision Hair Transplant | 1000 Units Hairline Planting
$24,990.00
Premium Ceramic Tea Canister Packaging Box, Empty Gift Box for Black Tea, Pu'er, White Tea, Biluochun, Gift Set Empty Box
$104.95
Thickened 304 Stainless Steel Planter Box for Home Balcony Vegetable Gardening - Rectangular Large Flower Pot for Rooftop Planting
$204.00
Zhongheng Car Tire Stone Hook - Multi-Function Tire Cleaner Tool to Prevent Blowouts
$7.14
JoanMiro 3D Printing Pen for Kids, Low-Temperature 3D Stereoscopic Drawing Toy, Perfect Gift for Boys and Girls on Children's Day
$29.90
Stainless Steel Tire Stone Removal Hook - Multi-Function Car Tire Cleaning Tool for Picking and Scraping Stones
$5.03
Cart Cover Rice Husk Charcoal Premium Plant Ash Grain Shell Carbon Natural Organic Fertilizer for Vegetables Succulents and Flowers
$6.55
Aojilong Automotive Plastic Restorer – Revives Black Trim, Repairs Aging, Crystal Coating Finish
$28.80
![[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)
