Best Detect Light Changes

LM YN ADXL345 Digital 3-Axis Acceleration Gravity Tilt Sensor Module IIC SPI 3V to 5V

ADXL345 is well suited for mobile device applications. Can measure the static acceleration of gravity in tilt-sensing applications, it can also measure both dynamic acceleration resulting from motion or shock. Its high resolution (4 mg / LSB), capable of measuring the angle of inclination changes less than 1.0 °.003cbr003e.
Digital output data is 16-bit twos complement format, via SPI (3-wire or 4-wire) or I2C digital access interface.003cbr003e.
ADXL345 is a small, thin, low-power 3-axis accelerometer with high resolution (13-bit) measurement at up to 16g.003cbr003e.
The device offers a variety of special detection. Activity and inactivity sensing detect whether the motion occurs, and the acceleration on any axis exceeds the limits set by the user. Tap detection function can detect and double-click action. Free-fall detection can detect whether the device is falling. These functions can be mapped to two interrupt output pins a. 32 First In First Out (FIFO) buffer can be used to store data to minimize host processor intervention.003cbr003e.

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Adafruit 1918 Analog UV Light Sensor Breakout - GUVA-S12SD

photosensitive resistance module's most sensitive to ambient light, commonly used to detect environment around the brightness of the light, or MCU trigger relay module, etc..
module in the environment light intensity than set threshold, output high level DO end, when the environment light intensity more than set threshold, the DO output low level.
the DO output can be directly connected to microcontroller, through single chip microcomputer to detect the high and low level, thus to detect the environment light intensity change.
the DO output can be directly driven our relay module, which can form a light-operated switch..

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FORA IR18 Infrared Ear Digital Thermometer Quick and Accurate Measurement for Baby Kids and Adults Fever Alarm Bonus Probe Covers

Clinical accuracy at home: Our IR18 thermometer can give you an accurate and reliable reading in only 1 second. Its built-in high-efficiency....
Quick AND SMART Infrared Reading – Easily detect your child’s accurate temperature by placing the thermometer inside the ear..
Intelligent fever alarm: An obvious red light shows on the large backlit LCD screen to indicate a fever. The backlit display allows you to obtain....
10 recent readings in memory: The IR18 stores 10 of the most recent measurements to conveniently track body temperature changes..
Bonus Probe Cover (20 PCS) within the package..

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LITLISFlY Solar Spot Lights Outdoor Landscape Lights, IP67 Waterproof 50 LEDs Solar Spotlight Outdoor Auto On/Off, Solar Outdoor Lights Garden Pool Tree Lights, 3 Modes Solar Spotlight for Yard,4pack

... ⭐【3 Modes Brightness Lighting】The outdoor solar yard lights built in 3 brightness grades for chosen, press the power button and switch the modes between Low Light Mode/ Medium Light Mode/ High Light Mode (18-12-6Hrs using time). The solar tree lights can dusk-to-dawn automatically detect changes in brightness of the external environment. The solar panels can automatically detect whether it’s day or night using the brightness of its surroundings..
⭐【Excellent quality & IP67 Waterproof】The solar spot lights used high-strength ABS material, and pass the strict air-tightness test. The solar landscape lights can withstand all kinds of terrible weather such as rain, snow, high frost, high temperatures, etc. It is perfect for outdoor use! The IP67 protection level enables the solar outdoor spotlights to work normally under temperatures ranging from -20~50°C. And will last longer than IP65 waterproof products or others..
⭐【Larger Brightness Range & Higher Conversion Rate】Upgraded outdoors solar landscape spotlights with 120º wide angle lighting, providing a super bright for a wide area and it can illuminate longer. The sol....

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Grewtech V07 Smart Bracelet Watch Wristband Sports Heart Rate Monitor Fitness Tracker Pedometer Step Counter Tracking Calorie Health Blood Pressure Sleep Monitor Black

[Special Features]** Sphygmomanometer, at any time detect blood pressure and changes before and after exercise, the body effectively remind....
User friendly design: Host is equipped with a standard USB port, easy to take charge via PC. Bracelet V06 is a touch screen sensitivity design - you....
strap design adjustable snap to fit your wrist cuff S2 is with a touch screen design sensitivity - you can....
Functions: Phone calls, SMS, MMS, Time synchronization (need App), Time / date, anti-lost, sleep monitor, alarm, pedometer ect. Data Sport....
Warranty: 1 year, life-long after sale services.

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Grewtech V07 Smart Bracelet Watch Wristband Sports Heart Rate Monitor Fitness Tracker Pedometer Step Counter Tracking Calorie Health Blood Pressure Sleep Monitor Dark Blue

[Special Features]** Sphygmomanometer, at any time detect blood pressure and changes before and after exercise, the body effectively remind....
User friendly design: Host is equipped with a standard USB port, easy to take charge via PC. Bracelet V06 is a touch screen sensitivity design - you....
strap design adjustable snap to fit your wrist cuff S2 is with a touch screen design sensitivity - you can....
Functions: Phone calls, SMS, MMS, Time synchronization (need App), Time / date, anti-lost, sleep monitor, alarm, pedometer ect. Data Sport....
Warranty : 1 year. Life-long after sale services..

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Landscape Lights Outdoor Solar Powered, 2-Pack 80W Equivalent, Dusk to Dawn Path Lights Daylight, Solar Uplights for Tree, 2-in-1 Wireless Low Volt Garden Backyard Floodlights, EMANER

✨〖2 Brightness Modes (Always on) & Dusk-to-Dawn〗EMANER outdoor landscape spot lights designed for two lighting mode:Low Light Mode / High Light Mode. Charge to different mode by pressing the switch at back of the solar panel. can automatically detect changes in the brightness outside. When the brightness is low enough to require illumination, it will automatically Auto On in the daytime / Auto Off in the evening..
✨〖Super Bright LEDs in Waterproof Compact Body〗You will be surprised at how bright these LEDs shine for such a small wireless solar light. Be sure to place the unit away from outside light and angle the solar panel towards direct sunlight for best results. The IP65 weatherproof rating allows you to keep outdoors year round..
✨〖Dual Head Rotatable and 2 in 1 Mounting Options〗The Motion Sensor Solar Lights are available for Landscape lighting Ground-Mounting or Security lighting Wall-Mounting. Two heads and Solar Panel Rotatable. EMANER solar spotlights are perfect for Yard, Patio, Porch, Path, Deck, Pool, Garden, Garage, Driveway, Pathway, Security Wall Light, etc..
✨〖Solar powered & Easy Installation 〗This LED outdoor Solar wall light equipped with high performance solar panel charge 4-6 hours, can work above 8 hours, g....

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Linkind 16 LEDs Solar Landscape Spotlights, Dusk-to-Dawn IP67 Waterproof Solar Powered Spot Lights, 6500K Daylight White, Outdoor Wall Lights for Garden Yard Driveway Porch Walkway, 2 Pack

... ground as landscape light or fix it on the wall as wall light. Perfect for patio, porch, deck, pool, yard, garden, garage, driveway, pathway, etc..
☆2 Brightness Lighting Modes☆: Featuring Low Light Mode (12hrs) and High Light Mode (6hrs), Linkind dusk-to-dawn solar landscape spotlights can automatically detect changes in brightness of the external environment. It is auto on at night and auto off at sunrise..
☆Supreme Quality & IP67 Waterproof☆: Free from unpleasant odour, the durable anti-UV ABS material will protect the spotlights from discoloring. IP67 waterproof rating allows the lights to withstand all kinds of terrible weather. Workable under temperature ranging from -20~50°C..
☆Eco-friendly & Safety Assured☆: The solar landscape light has a longer working time of 30000 hours, which is energy saving and eco-friendly. FCC, CE certified..

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Solar Landscape Spotlights, Linkind 16 LEDs Dusk-to-Dawn IP67 Waterproof Solar Powered Spot Lights, 6500K Daylight White, Outdoor Wall Lights for Garden Yard Driveway Porch Walkway, 4 Pack

... ground as landscape light or fix it on the wall as wall light. Perfect for patio, porch, deck, pool, yard, garden, garage, driveway, pathway, etc..
☆2 Brightness Lighting Modes☆: Featuring Low Light Mode (12hrs) and High Light Mode (6hrs), Linkind dusk-to-dawn solar landscape spotlights can automatically detect changes in brightness of the external environment. It is auto on at night and auto off at sunrise..
☆Supreme Quality & IP67 Waterproof☆: Free from unpleasant odour, the durable anti-UV ABS material will protect the spotlights from discoloring. IP67 waterproof rating allows the lights to withstand all kinds of terrible weather. Workable under temperature ranging from -20~50°C..
☆Eco-friendly & Safety Assured☆: The solar landscape light has a longer working time of 30000 hours, which is energy saving and eco-friendly. FCC, CE certified..

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