ReviewsWorking Principle

DIKAVS DC 15-24V 15W Mini Music Tesla Coil Plasma Speaker Loudspeaker Tesla Wireless Transmission DIY Kits

This Tesla Tesla on the basis of the general increase in the music player, you can play phone / computer music, clear sound..
15-24V DC input voltage, when 24V, 5 - 10 mm arc length meters is ideal, small size, power and energy range, can be a long uninterrupted work, you can also Taking lit LED, foam energy-saving lamps, flash frequency tube, you can play wireless power transmission, rotating arc and the like..
Wireless transmission principle: a coil connected at both ends with both ends LED, near-emitting device, LED will Qiliang, the principle is resonant wireless power transfer.
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Roexboz Kinetic Art, Perpetual Marble Machine Automatic Swing Motion Perpetual Model Science Physics Balance Toy Desk Top Decoration Gift for Children and Adults

...Impressive with a plastic base made of high-quality plastic and a unique design concept. Reliable, sturdy accessories for table sports decoration. Use kinetic energy to keep the ball in an infinite loop. Surprise your friends with this clever toy and leave them scratching their heads. Everyone will love it..
Working principle: The working principle, using the principles of dynamics and gravity to make the metal balls constantly toss and fall. Newton’s Law kinetic art ball can move continuously. Good torque and centroid performance. Not only does it demonstrate pendulum motion, but it helps demonstrate the laws of conservation of momentum and energy..

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2.5W Solar Air Pump Kit Battery Backup 3 Working Modes Fish Pond Aerator Bubble Oxygenator with Air Hoses and Bubble Stone

【Solar Energy Working Principle】The power of this oxygen pump comes from solar energy, it’s eco-friendly, energy saving and safe..
【Built- in Battery Backup】3.7V 1800mAh 18650 lithium battery with power storage function, it can works even at night and cloudy days..
【180°Adjustable Angle Solar Panel】You can adjust the bracket angle according to sunshine direction, it ensures to receive solar energy at different time periods in the day..
【Working Modes】There are 3 working modes for you to operate, fulfill all your needs in the daylight and night..
【Easy to Use】Just need to connect air pump to oxygen hoses and air bubble stone, then put the hoses and air bubble stone into the water pool,press the power switch which will start to work,press mode button to change different working modes..

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4Pcs Jaw Protectors, ABS Tire Changer Clamp Cover Jaw Protectors Guard Protective Covers

PREMIUM QUALITY- Made of high quality material, strong enough for those tough to remove tires but still flexible enough prevent wheel damage.
PROTECT WHEELS- The 4 protective covers that slip over the clamping jaws of many tire changers. Effectively prevent wheels from marring or scratching..
RELIABLE TO USE- Thick, durable, wear-resistant and smooth, high reliability..
WORKING PRINCIPLE- These protectors clip over the jaws and remain secured in place while working with the machine..
SERVICE GUARANTEE- Professional product quality, great aftermarket replacement service. If you have any questions about this product, please feel free to contact us..

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Air Wick Automatic Spray- Indoor Wall-mounted Automatic Air Freshener Fragrance Aerosol Spray Dispenser Air Freshener Dispenser with Light Sensor for Bathroom Washroom Hotel Office

... applications: wall-mounted style, suitable for family bathrooms, public toilets, hotels, restaurants, etc. It can be used to purify the air and eliminate odors. It has the effect of refreshing, soothe the nerves and eliminating fatigue. With an instant spray button (test button), you can spray immediately..
Working principle: The automatic aerosol dispenser (automatic aerosol dispenser) is a kind of small electronic device specially designed for adjusting air by mechanically controlling the internal motor through the internal motor to trigger the fragrance (air freshener) in a timed trigger mode. Low light design, suitable for working in low light conditions..
Durable material: This automatic aerosol dispenser is made of high quality ABS material with a new and modern design. The housing is lightweight, rugged, rust-proof, wear-resistant and durable. Stable performance and high reliability..
Freely settable: 3 setting intervals for your daily use. The machine can work during the day or night according to your requirements, you can set the interval to 7.5 / 15 / 30 minutes as needed. The machine will automatically spray the fragrance according to your settings..
Energy-saving mode: Built-in light sensor, light sensing function, can recognize day and nigh....

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Excelity 3pcs Ultrasonic Module HC-SR04 Distance Sensor with 3pcs Mounting Bracket

[PACKAGE INCLUDED] 3pcs HC-SR04 distance measurement module & 3pcs mounting bracket for installation.
[FEATURE] These module is for distance measuring transducer that working with ultrasonic, they consist of ultrasonic transmitter, receiver, and....
[FUNCTIONAL PARAMETER] Effectual Angle: .
Resolution : 0.3 cm. Power Supply : 5V DC.
[UNIVERSAL COMPATIBILITY] Built in standard interface that can be controlled directly by microcontroller，such as 8051, AVR.
[WORKING PRINCIPLE] Using IO trigger for at least 10us high level signal, when triggered it sends out a series of 40KHz ultrasonic pulses and receives....

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Acupuncture Pen,Electronic Accupuncture Pen Massage Pen Energy Pen Relief Pain Tools,1 x AA Battery (Not Included)

Three in one function: (1) Ball type: suitable for health care and facial beauty (2) Node type: suitable for part of body pain (3) Ball type: suitable for rapid pain relief. No needle can easily focus on the painful area to relieve pressure and relax intensity adjustable intensity control.
Working principle: The probe part of the acupuncture pen is based on the principle of single-phase electricity, which must rely on the body's own static electricity to make it into a loop. If you ask someone to give you acupuncture, he needs to put his hand on your skin and the acupuncture pen will work. If he does not put his hand on your skin, the meridian pen is still working, but you will feel nothing..
Instructions: This product has 9 adjustable intensity control functions. When the power supply of the control is 0, it will flash red for a few seconds and then turn off automatically. Starting from level 1, you can increase the level by pressing a button. Level 1 is the weakest and level 9 is the strongest. Please use the most comfortable level to get the best acupuncture points..
Accpoint point: The Meridian energy pen is based on magnetic force to find acupuncture points. It does not need to go deep into the human body. Its magnetic field range is about 3cm. As ....

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DNA MOTORING CBE-HC922-NRT Stainless Steel Cat Back Exhaust System [Compatible with 92-00 Honda Civic Coupe/Sedan]

[Premium Acoustic Control] EVIL ENERGY muffler is densely packed with excellent, sound-absorbing cotton, giving a low, deep tone that is reverberated to increase sound. Easy to install, bolts on in minutes..
[Size and Construction] This muffler is having 2" inlet, 3" exit, 15" length, polished stainless steel. Please measure your car's inlet before purchasing..
[Working Principle] A muffler is a device that is installed towards the end of a vehicle's exhaust system, work on the principle of destructive interference and absorption. The walls of the muffler are made of two layers of stainless steel, which help reduc vibration and absorb sound..
[Excellent Quality] This muffler's straight-through shape relieves back pressure while absorbing sound waves. Stainless steel is used to provide long-term durability..
[Distinctive Appearance] The burned blue tip of the muffler offers an artistic focus point to the back of the car. Your vehicle will undoubtedly stand out among the crowd..

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Kinetic Art Perpetual Motion Machine Desk Toy for Home Office, Perpetual Motion Simulator Non-Stop Rolling Ball Toys Science Physics Gadget, Newtons Kinetic Desktop Decoration Toys

...Impressive with a plastic base made of high-quality plastic and a unique design concept. Reliable, sturdy accessories for table sports decoration. Use kinetic energy to keep the ball in an infinite loop. Surprise your friends with this clever toy and leave them scratching their heads. Everyone will love it..
Working principle: The working principle, using the principles of dynamics and gravity to make the metal balls constantly toss and fall. Newton’s Law kinetic art ball can move continuously. Good torque and centroid performance. Not only does it demonstrate pendulum motion, but it helps demonstrate the laws of conservation of momentum and energy..

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hygger Multifunction Turtle Tank Filter 150GPH Low Water Level Aquarium Filter for 1.2~5.5 Gallon 8W with Filter Sponge Biochemical Ball Filtration/Culture/Oxygen/Wave/Water Change

WORKING PRINCIPLE: ①The dirty water enters the tube on one side through the bottom.
②The dirty water flows from the tube on one side to the top.
3 LAYERS FILTER MATERIALS: The first layer - Fine-hole filter sponge, absorb debris, filter out large dirt particles in the water, such as food,....
5 in1 AQUARIUM FILTER: ①Filtration/ Culture/ Oxygen. 2 kinds and 3 layers of filter materials. ②Wave Effect. Clean water flows out, can be....
OW WATER LEVEL TURTLE FILTER: Lowest water level:1.2inchs.
Best water level:3.1inchs. The pump works quietly and consumes only 8 watts, 150GPH, while....
USE TIPS:①Due to the siphon principle, the lower the water level, the pumping effect may become weaker. ②The water change hose is not included.....

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Freeze Fat Removal Instrument, Body Shaping Machine for Fat Loss Excess Fat, Lipolysis Substance and Cold Freeze Fat Massage for Cheek Arm Waist Upper

[WORKING PRINCIPLE]: The machine creates a concentrated cold stream around the treatment area. By means of a non-invasive procedure, this set can reduce the temperature in specific areas depending on the cooling of the subcutaneous cells, which will decompose the fat, without damaging any of the surrounding tissues or the skin..
[EFFICIENT]: this device to lose weight of the bod[WORKING PRINCIPLE]: The machine creates a concentrated cold stream around the treatment area. By means of a non-invasive procedure, this set can reduce the temperature in specific areas depending on the cooling of the subcutaneous cells, which will decompose the fat, without damaging any of the surrounding tissues or the skin..
[EFFICIENT]: this device to lose weight of the body helps greatly to increase the metabolism of your body so that they can not return easily. We have developed this product for people plagued with persistent fat by freezing fat. It only requires 4 to 6 months of regular use of our products, will help the body to expel them naturally and will almost never be able to return..
[SCOPE OF APPLICATION]: Our fat freezing machines are designed not only for women but also for men. They are specially provided for all people who want to maintain a perfect body shape....

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