Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Operating Voltage | DC 5V / 12V |
| Sensor Type | Photoresistor (LDR) |
| Output Mode | Digital Switching (Relay) |
| Adjustable Sensitivity | Yes, via Potentiometer |
| Relay Contact Rating | 10A at 250VAC / 30VDC |
| Response Time | < 100ms |
| PCB Dimensions | 32mm x 14mm |
| Mounting Hole Diameter | 3.0mm |
| Indicator LED | Power and Trigger Status |
| Application Range | Street Lights, Night Lamps, Auto Dimming |
Anonymous
Mar 28, 2026
Rating: 5/5
Exactly what I needed
Fast shipping and the product matches the description. I used it to control a 12V LED strip based on ambient light, and it has been running flawlessly for two weeks now.
Anonymous
Mar 21, 2026
Rating: 4/5
Solid component for the price
Works well with both 5V and 12V systems. The relay feels sturdy. Just make sure your load doesn't exceed the amperage rating, which is standard for this size of module.
Anonymous
Mar 15, 2026
Rating: 5/5
Great sensitivity range
Even in low-light conditions like twilight, this sensor picks up the change perfectly. The potentiometer allows for fine-tuning so it doesn't turn on too early in the evening.
Anonymous
Mar 10, 2026
Rating: 4/5
Good value but instructions could be better
The hardware quality is solid and the relay clicks reliably. I deducted one star because the pinout diagram on the back was a bit faint. Once figured out, it works great for automating my porch light.
Anonymous
Mar 06, 2026
Rating: 5/5
Reliable and compact
I bought three of these for different rooms. They are small enough to fit inside standard junction boxes. The transition from day to night mode is instant without any flickering.
Anonymous
Mar 06, 2026
Rating: 5/5
Perfect for my Arduino project
This module worked exactly as described. The sensitivity adjustment is very smooth, allowing me to set the exact light threshold needed for my garden lights. Wiring was straightforward.
Q: Can this module directly control a 220V AC light bulb?
A: Yes, the onboard relay is rated for 250VAC. However, please ensure the current draw of your bulb does not exceed 10A to maintain safety and longevity.
Q: Does this come with wires included?
A: No, the module is sold as a standalone board without pre-attached wires. You will need to solder your own connection wires or use a terminal block adapter.
Q: Can I use this with a Raspberry Pi GPIO?
A: Yes, but since the Pi GPIO operates at 3.3V logic and this module is optimized for 5V, we recommend using a level shifter or powering the module at 5V while ensuring the signal pin is compatible.
Q: Is the output normally open or normally closed?
A: The default state depends on your wiring, but typically the relay is Normally Open (NO) when no trigger signal is present. You can wire your load to the Common (COM) and NO terminals for standard operation.
Q: How do I adjust the light sensitivity threshold?
A: There is a blue potentiometer on the PCB. Use a small screwdriver to rotate it clockwise to increase sensitivity (trigger in brighter light) or counter-clockwise to decrease it (trigger only in darkness).
![[In Stock] MINISO YOYO Wind-Chasing Diary Series Aromatherapy Figure Blind Box – Youyou-chan Ornament](https://www.gosteppe.com/cache/small/product/269008/legacy-main-75745db0463ce5521fe5703d.webp)
[In Stock] MINISO YOYO Wind-Chasing Diary Series Aromatherapy Figure Blind Box – Youyou-chan Ornament
$49.00
Sanitary Juice Beverage Dairy Mixing Tank Food Pharmaceutical Electric Heating Emulsification Reaction Dissolution Tank
$4,122.00
Zhi Paper Calligraphy Copybook: Shen Du's Red Cliff Ode, Jingzhai Zhen, and Bu Zi Qi Shuo - Small Regular Script Cards for Tracing Practice
$17.00
Maike Outdoor Waterproof Dry Bag - Crossbody Travel Backpack for Rafting Diving and Beach Activities
$19.90
Oriental Pearl Dual Porcelain Jar Gift Set: Green Tea, Black Tea, Jin Jun Mei, and Pu'erh Loose Leaf Tea in Porcelain Jars
$140.41
Transparent Retainer Storage Case – Portable Soaking and Cleaning Box for Orthodontic Appliances and Dentures
$8.42
Original Wang Xizhi Huangting Small Regular Script Calligraphy Copybook for Soft/Hard Tip Pens Tear-Off Card Precise Tracing Kaishu Huan'e Tie
$35.70
Foldable Kitchen Sink Dish Drying Rack - Silicone Roll-Up Mat and Countertop Organizer
$25.40
Rapid Folding Shopping Cart, Small Trolley for Stairs, Lightweight Portable Home Handcart, Supermarket Pushcart and Vegetable Basket
$178.39
Over-Toilet Storage Rack - No-Drill Toilet Paper Holder with Multi-Compartment Shelves for Wet Wipes and Aromatherapy
$19.71
Stainless Steel Planter Pot - Outdoor Vegetable and Flower Growing Box for Balcony, Rooftop, Courtyard, Auto-Drainage, Customizable
$42.50
Stainless Steel Over-Toilet Storage Rack, Multi-Function Floor-Mounted or Wall-Mounted Multi-Tier Organizer for Bathroom, Toilet, and Laundry
$50.00
![[Chip 3.0 Upgraded Model] Senzhou TDS Water Quality Tester for Tap and Drinking Water Health Monitoring](https://www.gosteppe.com/cache/small/product/268996/legacy-main-32173fe50b846ac0e87ae26e.webp)
[Chip 3.0 Upgraded Model] Senzhou TDS Water Quality Tester for Tap and Drinking Water Health Monitoring
$22.90
Here and Now Pocket Calligraphy Copybook: Wen Zhengming Small Regular Script for Adult Beginners
$18.00
Southern Red Agate Loose Beads for DIY Crystal Jewelry Making, Round Bead Accessories and Materials
$1.10
3-Tier, 4-Tier, 5-Tier Double-Layer Drainage Rack, Water Bucket Stand, Floor-Standing Thickened Rack
$276.32
Multi-Layer Over-Toilet Storage Rack for Bathroom, Drill-Free Floor Stand for Washing Machine and Balcony Organization
$46.96
Thickened Industrial Scouring Pad Emery Stainless Steel Abrasive Cloth Pot Scrubber Rust Removal and Polishing Wheel
$7.28
Wall-Mounted Bathroom Toilet Paper Holder and Tissue Dispenser Rack
$49.00
Arches French Watercolor Paper 300g/640g/850g, Cold/Hot Press, 100% Cotton, Deckled Edge, 2K/4K/8K
$29.60
Wen Xin Tang Yan Zhenqing Duobao Pagoda Stele Calligraphy Copybook, Tang Regular Script, Adult Beginner Calligraphy Practice Cards
$49.30
![[Shenzhen Best Seller] Premium Wearable Negative Ion Air Purifier - Neck-Hanging Portable Electronic Mask](https://www.gosteppe.com/cache/small/product/268987/legacy-main-5f71c8070119587e6427efe9.webp)
[Shenzhen Best Seller] Premium Wearable Negative Ion Air Purifier - Neck-Hanging Portable Electronic Mask
$298.00
Teruisi Electric Fruit and Vegetable Slicer, Multifunctional Chopper for Cafeterias and Hotels, Cutter for Green Onions, Chili Peppers, Radishes, and Ginger
$3,798.00
Waterproof Phone Pouch for Diving, Swimming, Rafting, and Hot Springs, Sealed Underwater Storage Bag with Waist Strap
$12.90
Premium Thick Cardstock Lin Zexu Representative Small Regular Script Infinite Life Sutra Close-Up Copying Calligraphy Copybook Regular Script for Beginners
$39.80
Zunjue Ticket-style 100% Cotton Watercolor Paper 300g Cold Press for Artists with Deckled Edges
$10.20
Kids' 3D Printing Pen – 3D Stereoscopic Drawing Toy for Girls, Perfect Birthday Gift
$104.66
Mifaner Handmade Watercolor Sketchbook – Oil Painting Series Canvas Journal, Travel-Friendly Mini Notebook for Acrylic Markers
$16.90
(Sasha Exclusive) Fat Small Card
$1,399.00
Silicone Faucet Side Drain Mat, Foldable Splash-Proof Pad for Kitchen Sink and Bathroom Washbasin
$4.93
![[Youxin Electronics] GP2Y0E03 Infrared Distance Sensor Module 4-50cm Range](https://www.gosteppe.com/cache/medium/product/74667/legacy-main-4da8cadc5fc82afe91b124e3.webp)
![[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)
