Reviews Recognition Semiconductor

QTlier Personal Breathalyzer, Professional Accuracy, Portable Breath Alcohol Tester with Indicator Light and Digital Display for Home Use (with 10 Individually Packaged mouthpieces)

  • ❗High Accurancy and Battery: This Breathalyzer performs gas detection through a sensitive semiconductor sensor. This portable breathalyzer can quickly give a referenceable result when the result is + or – 0.02 sensor accuracy at 0.050 percentage of BAC. 2AA 1.5V batteries need to be prepared before use.
  • ❗Easy to Use: Easy to use. Press the button for about 2 seconds and the device will turn on, then the device will count down from 20 seconds. When the countdown is over, the screen will display “blo”. , then blow evenly until the device emits three beeps, and the test result will be displayed on the screen after a few seconds..
  • ❗LCD display and automatic shutdown:All test results are shown on the LCD display, including the battery level, and alerts are given when the battery is low. In addition, there is an automatic shutdown function, when the Breathalyzer is turned on, if 20S no operation will automatically shut down to save electricity..
  • ❗EASY TO CARRY AND PACKAGE: Breathalyzer is only 4.84in*1.73in*0.75in and supports 2AA batteries. You can easily carry in your pocket, bag or in the car. Very convenient to carry out. Package: 1 * alcohol tester, 1 * manual, 10 * Mouthpiece, 1 * Packaging bags,1*Warm Tips(No Battery)..
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Smart Fingerprint Door Lock Keyless Entry Door Lock, Biometric Door Lock Fingerprint Door Knob with App Control for Home Hotel Office Apartment Bedroom (Black, 1 Pcs)

  • ...g, mobile app unlocking, key unlocking, they are ideal fingerprint door lock smart door knob for bedrooms, cloakrooms and offices hotels.
  • Smart and Safe Technology: a button fingerprint door lock supports automatic unlocking of apps at close range, creating a smart living, semiconductor fingerprint sensor that can easily obtain fingerprint management, can accommodate up to 20 fingerprints, fast fingerprint recognition unlocking, at the same time, the app checks the unlocking records to protect your home security.
  • Simple and Understandable Installation: no wiring, no drilling required, the smart door knobs handles installs easily with a screwdriver in minutes, fits most US doors, easily replaces existing door locks, there are detailed installation steps, you can set the channel or lock mode to meet the needs of various conditions.
  • Quality Material: the keyless round door knob is made of quality aluminum alloy material, it is a comfortable, safe and reassuring material, which is clear, smooth and easy to clean, it can be applied for -25 to 70 degrees, and the lock body is more secure.
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Fingerprint Padlock, Eseesmart Large Size Smart Padlock, Bluetooth Fingerprint Lock Combination Lock with Mobile APP, IP65 Waterproof for Gate, Warehouse, Lockers, Gym, Cabinets, Fence, Office

  • ... padlock can register up to 10 sets of fingerprints. You can also authorize and share the lock to your family/friend to use it. Connect smart padlock to free mobile app by Bluetooth. You can use the app to register fingerprints, unlock, set authorized user..
  • 【APP&Bluetooth Unlock】Thanks to the high-tech biometry semiconductor sensor and Bluetooth tech, the thumbprint padlock is responsive that it only takes 0.2secs to unlock without the hassle of recognition error. The fingerprint lock can also record the unlocking person, unlocking time, unlocking location, and checking the usage time and location in real time..
  • 【Rugged Construction】The padlock body is made of Aluminum Alloy and stainless steel lock beaml for excellent tamper resistance. IP65 weatherproof protects against dust and water,enhance the durability of the lock..
  • 【Long Standby Time & USB rechargeable】Smart padlocks have lower power consumption and longer standby time. The USB rechargeable 220MAH lithium battery can support up to 6-month of standby time or 1800 times of unlock) in one charge. When out of battery, the smart lock will remain locked, simply connect to a USB power supply and recover..
  • 【Widely Uses】4 inch and 0.4kg fingerprint padlock,make sure to meet your needs.The....
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Smart Fingerprint Door Lock Keyless Entry Door Lock, Biometric Door Lock Fingerprint Door Knob with App Control for Home Hotel Office Apartment Bedroom (Black, 2 Pcs)

  • ...g, mobile app unlocking, key unlocking, they are ideal fingerprint door lock smart door knob for bedrooms, cloakrooms and offices hotels.
  • Smart and Safe Technology: a button fingerprint door lock supports automatic unlocking of apps at close range, creating a smart living, semiconductor fingerprint sensor that can easily obtain fingerprint management, can accommodate up to 20 fingerprints, fast fingerprint recognition unlocking, at the same time, the app checks the unlocking records to protect your home security.
  • Simple and Understandable Installation: no wiring, no drilling required, the smart door knobs handles installs easily with a screwdriver in minutes, fits most US doors, easily replaces existing door locks, there are detailed installation steps, you can set the channel or lock mode to meet the needs of various conditions.
  • Quality Material: the keyless round door knob is made of quality aluminum alloy material, it is a comfortable, safe and reassuring material, which is clear, smooth and easy to clean, it can be applied for -25 to 70 degrees, and the lock body is more secure.
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Smart Front Door Lock Set, SMONET Keyless Entry Door Lock Deadbolt with Handle Electronic Keypad Deadbolt with Handle Digital Door Lock Smart Door Lock with Bluetooth Smart Deadbolt Lock

  • ULTRA-SAFE &CONVENIENCE003e003eEnter your home within 0.3S just a touch unlock and this Smart fingerprint deadbolt lock it automatically. No more fumbling around for keys.
  • the recognition rate is higher than 98%.semiconductor sense your fingerprint in 360 degrees keeping your home safe.
  • 2 UNLOCK OPTIONS003e003eYou could use fingerprints or emergency keys to unlock.Internal memory storage,no extra app.simple process are suitable for any age such as child ,elderly.4 pcs AAA battery could be unlock up to 9 months,and USB port outside could provide you emergency charging while run out of battery..
  • ADD A MODERN TOUCH TO YOUR PROPERTY 003e003e Along with rigorously tested construction, SMONET smart door lock deadbolt is made of zinc alloy material, anti-corrosion also have a sleek modern design which would complement any interior door in the residential home, apartment, or commercial business office building.
  • QUICK AND EASY INSTALLATION003e003eReplaces existing deadbolt all by yourself with just a screwdriver (included in package).No skills required.No extra lines or drilling extra holes.Within minutes you could replace your basic lock with the Smart biometric deadbolt door lever with our video. Applicable for both left and right-handed doors and ideal for mos....
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Ardwolf A50 Keyless Entry Door Lock with Right-Handle, Fingerprint Auto-Lock, 304 Stainless Steel Biometric Front Door-Locks with Keys Key-pad for Homes Garage Bedroom Security

  • ... most solid lock shell material - Stainless steel 304, with the advantages of anti-rust, anti-drilling, anti-prying and extra long service life.
  • Precision copper gear transmission design enhance durability.
  • USA TI code chip, preventing high-frequency pulse unlocking..
  • FAST & ACCURATE FINGERPRINT READER - adopts live semiconductor sensor and 360-degree fingerprint recognition allows this lock to read your fingerprint within 0.5 seconds (false accept rate 1/1,000,000, false rejection rate 1/1,000,000). It works well with 4--80 years old..
  • LARGE CAPACITY & MULTIPLE UNLOCK METHODS - UP to 200 user IDs (10 administrators,140 normal users,50 guests. Guests can only enter at a certain time period) could be registered to this security biometric smart lock. Support unlock by fingerprint entry / keyless code / mechanical key..
  • DOUBLE VERIFICATION SECURITY MODE - the mode requires two different access IDs to unlock. Useful in a higher security environment where you require two-person integrity in order to open a door. Safe for your office or important warehouse. Suitable for most of inside and outside doors.
  • EASY to INSTALL- Only two wires need to be connected to the back panel as all controller chips are in the front panel. It takes only several minutes to in....
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CatXQ Semiconductor Cooler for ipad/Tablet/Phone/Switch Gaming Cooling Case

  • CatXQ Semiconductor Cooler Fan Compatible with All Smart Phone (for iPhone / for Samsung), Tablet (for iPad / for Amazon Fire HD / for Surface / for....
  • Semiconductor Refrigeration Technology:The refrigeration principle of refrigerator is adopted to cool the mobile phone quickly,when playing Fortnite,....
  • RGB Atmosphere Lamp,High brightness lamp beads form RGB ring lamp belt, with high-speed fan rotation, a variety of light effect random change, give....
  • Powerful heat sink: The cooling fan prevents the phone from overheating while playing the game console, extending the life of the phone and battery..
  • Package Include: CatXQ Phone Cooler, 1M USB to TYPE-C Cable, 3 pairs of telescopic clamps(1 pairs black,2 pairs blue).Customer Service Team is....
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High Purity Silicon Metal Element 14 Semiconductor Monocrystalline Si Block(50g)

  • HIGH QUALITY: 100% brand new and high quality. 99.99% high purity monocrystalline silicon block..
  • GOOD FEATURE: Monocrystalline silicon has a diamond lattice, the crystal is hard and brittle, has a metallic luster, can conduct electricity, but has a conductivity lower than that of metal, and increases with temperature, and has semiconductor properties..
  • ENERGY CONVERSING: It can also be used to make solar cell, conversing solar to electricity..
  • USAGE: It is the raw material for manufacturing semiconductor silicon devices, used to manufacture high power rectifiers, high power transistors, diodes, switching devices, etc..
  • SATISFACTION GUARANTEE: We care for every customers feeling.If this product does not meet or exceed your expectations,please send it back for a 100% refund no questions asked..
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Fingerprint Door Lock with Left-Handle , Ardwolf A60 Keyless Entry Biometric Auto-Lock Door Locks, Smart Front Door-Lock with Digital Keypads and Key for Garage Home, 304 Stainless Steel

  • ...AY: UP to 200 user IDs could be registered to this security biometric smart lock and both fingerprint and code unlock ways are available for each ID.
  • So, please enjoy the latest biometric technology which brings you convenience and security..
  • SENSITIVE FINGERPRINT READER: ADWOLF A60 fingerprint door lock adopts live semiconductor sensor and 360-degree fingerprint recognition allows this lock to read your fingerprint within 0.5 seconds (false accept rate 1/1,000,000, false rejection rate 1/1,000,000). It works well with 4--80 years old..
  • HIGH-SECURITY & SURVEILLANCE BIOMETRICS: Our smart door lock is ensured to be safe for your home and office, attributing to its anti-fake finger, anti-peep password, and anti-technical unlocking functions. The security level can reach a higher level by using the double verification feature, making it even qualified for bank or important warehouse..
  • ABLE TO BE WIDELY USED: This keyless entry smart lock fits door thickness between 1-1/5" and 2-2/5"(30-60mm).
  • Operation temperature from -4°F to 140°F.
  • Anti-Collision, waterproof, rustproof, suitable for most of inside and outside doors.
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