Best Optical Semiconductor

BRWISSEN A18 Air Quality Monitor Indoor Pollution Tester for Co2 Dust Meter PM1.0 PM2.5 PM10 Particulate Matter Analyzer HCHO Formaldehyde TVOC Detector Data Record Storage Particle Counter

  • ...ood sleeping environment, saving energy and electricity. Can turn off this function in settings page.
  • 003cb003eCO2 / HCHO / TVOC SENSOR003c/b003e -- NDIR Non-Spectral Infrared CO2 Carbon Dioxide Sensor, Absorption chamber Optical Coating.
  • Electrochemical formaldehyde HCHO sensor, double platinum catalytic electrode.
  • semiconductor TVOC sensor, indoor air quality meter can accurately measure a variety of volatile organic compounds TVOC / VOCs, such as benzene, nitrogen oxides, hydrogen sulfide etc.
  • 003cb003eAIR QUALITY ALARM003c/b003e -- Desktop air quality detector with touch button and 3000 mAh rechargeable battery, automatic detection at start-up, drawing 24hrs air quality change curve.
  • Comprehensive assessment of ambient air quality, AQI air quality alarms base on US standards, automatic TVOC HCHO sensor calibration.
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Tenamic Biometric Fingerprint Safe Box 1.41 Cuft Security Box with Induction Light and Leather, Solid Alloy Steel Home Cabinet Safe, Black

  • ...nd concealed pry-resistant hinges to offer you complete peace of mind. If necessary, you can fix it on the wall. No one can take away the contents of the safe without your permission. The new version of the safe greatly strengthens the packaging..
  • ✅【RELIABLE FINGERPRINT LOCKING SYSTEM】: TENAMIC uses the better semiconductor fingerprint reader from Germany, which is more accurate and faster than ordinary optical fingerprint reader! The stronger solid steel structure makes it impossible for others to use violence to open it from the outside. Only use the fingerprint or password you set or emergency key, the door will open..
  • ✅【BETTER CONFIGURATION】: As soon as you open the security box, the light will light up and go out automatically after 30 seconds. The inside of the safe is covered with leather to prevent wear and tear of valuables. The safe box also has an emergency external battery pack. When the internal battery is exhausted, you can plug it in to provide emergency power..
  • ✅【NECESSARY ALARM SYSTEM】: All illegal access is denied! Tenamic home safe has a good alarm system. 5 continuously wrong fingerprint or 3 wrong password entries will activate the warning beep for 20 seconds. Enter the correct fingerprint or password can stop the ....
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Fingerprint Lock, Anti-Theft Cabinet Lock Keyless Household Drawer Lock, Support 20 Sets of Fingerprints, USB Charging, Semiconductor Fingerprint Recognition Smart Fingerprint Lock

  • 【Semiconductor Identification】: The fingerprint collector uses a highly secure semiconductor charging fingerprint sensor.Every time you unlock, it will use fingerprint stitching and image recognition self-learning algorithms to continue to improve the pass rate..
  • 【Large Fingerprint Capacity】: Support up to 20 fingerprints, fast identification, fast unlocking, efficient and convenient.Friendly to kids and elderly,your finger is the key which discourages the thief to crack the code..
  • 【Long Standby Time】: Easy to unlock and touch to open, simple operation, long standby time, can be used continuously for 6 months. one hour for full charge,it can unlock more than 9,000 times.
  • 【USB Convenient Charging】: USB charging port, can be used for Android data cable and mobile power.It will remain locked when out of battery, simply charge it with a USB power supply(not over 5V) and it will resume working.
  • 【Wide Applications】: Easy to carry and widely used.For indoor and outdoor use, gym lockers, suitable for school lockers,furniture, wardrobes and other goods that you want to protect..
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Oarlike 1.9 Cu Ft Fingerprint Security Home Safe Box with Fireproof Document Bag Digital Touch Screen Keypad Interior Cabinet Dual Warning Alarm Large Safe with 3 Safety Lock Key Password and Fingerprint

  • ...large inner space has a built-in lock cabinet and removable shelfs.Which provides double private protection for your valuable personal belongings (photos, letters, private files).The safe also comes with built-in hooks, LED light and exquisite lining..
  • 【RELIABLE FINGERPRINT LOCKING SYSTEM】Oarlike uses the better semiconductor fingerprint reader, which is more accurate and faster than ordinary optical fingerprint reader! You can input 32 fingerrpints totally.Except for the hiding emergency key.The touch screen keypad will make the digital buttons invisable when you don`t use it..
  • 【ANTI THEFT SYSTEM】The safe comes with an intelligent alarm system,it will be issued by violent vibration or three- incorrect entries.The alarm sound exceeds 70 decibels for 60 seconds.Enter the correct code can stop the alarm.Our safe weighs up to 30 pounds, so it's hard for anyone to steal it.Or you can also fix the safe on the wall with bundled screws..
  • 【7 WAYS TO OPEN SAFE】 1. Fingerprint. 2. Passwords. 3. Fingerprint+Passwords.4.Fingerprint+Key.5.Password+Key.6.Fingerprint+Passwords+Key.7.Master key+Emergency key.Our safe box is euipped with a waterproof and fireproof document bag, you can use it to store cash, jewellery, important documents and protect your val....
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[2023 NEW] 7-8 Fireproof Biometric Gun Safes for Home Rifle and Pistols, Heavy Duty Anti-Theft Long Gun Safes for Rifles and Shotguns with 3 Handgun Pocket, Removable Shelf, Silent Mode

  • ...es. Our gun safe weighs up to 112 pounds, so it's hard for anyone to steal it or you can also fix the safe on the floor or wall with bundled screws to further prevent the risk of theft..
  • 【ADVANCED FINGERPRINT LOCKING SYSTEM】: Our biometric gun safe uses the better semiconductor fingerprint reader, which is more accurate and faster than ordinary optical fingerprint reader! The stronger solid steel structure makes it impossible for others to use violence to open it from the outside. Only use the fingerprint or password you set or emergency key, the door will open..
  • 【FOUR UNLOCKING METHODS】: Our rifle safe is designed with biometric , keypad and spare keys for 1S quick access and also included an external battery box that you can use if your combo batteries go out and you need to get in the safe. 100 fingerprints can be added..
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Tenamic Safe Box Biometric Fingerprint Safe Box 1.41 Cubic Feet Electronic Touch Screen Keypad Home Box with Induction Light and Leather, Solid Alloy Steel Office Hotel Home Cabinet Safe, Black

  • ✅【SPECIAL COATING】:Tenamic safe box used special ripple coating has been used to the surface for better protection against wear and corrosion. In order to reduce the risk of theft of the safe, it can be fixed on the floor, wall or cabinet..
  • ✅【QUICK ACCESS】:Tenamic safe box used the better semiconductor fingerprint reader, which is more accurate and faster than ordinary optical fingerprint reader! In addition, you can try to open it by setting a 3-8 digit password.If you find that the electronic lock is dead, you can use the key to open it, so please do not put the keys in the safe..
  • ✅【BETTER CONFIGURATION】: Tenamic security box has the newest design. As soon as you open the box, the light will light up, and it will automatically go out after 30 seconds. Not only that, the inside of the safe is covered with leather, it can prevent your valuables from being worn out..
  • ✅【NECESSARY ALARM SYSTEM】: Tenamic home safe has a good alarm system. 5 continuously wrong fingerprint or 3 wrong password entries will activate the warning beep for 20 seconds. Enter the correct fingerprint or password can stop the alarm..
  • ✅【SIZE AND PACKAGE】: Exterior Size: 15"*11.8"*13.8". Interior size: 14.6"*11.4" *13.4" (Please pay attention....
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WeJupit V8 Keyless Entry Smart Door Lock,Fingerprint Stainless Steel Touchscreen with Electronic Keypads Spare Key Two-factor Authentication Digital Biometric Auto-Lock(Left Handle Only) (Left Handle)

  • ...r convenient, no wifi needed】3-in-1 keyless entry: fingerprint + Code + Backup Key. Smart Functions: Auto-relock + Long-time-open Passage Mode + Temporary Visitor Mode + Two people Combination Mode (fingerprint + fingerprint, pass code + pass code, or fingerprint + pass code)..
  • 【Sensitive and High Capacity】The SEMICONDUCTOR FINGER SENSOR, which is 1.5~2 times better than optical fingerprint sensor, works well with anyone 4-80 years old. The touchscreen has over 2000 fingerprint collection points and only needs less than 0.5 second in identification. Store up to 200 fingerprints (10 administrators + 190 guests)..
  • 【Anti-peep Password and Safe】***** + pass code + **** Passcode works correctly even with incorrect digits added in front of the correct sequence and after, as long as the total number of digits does not exceed 17. Password input is displayed as * to prevent viewing by others. You can also set a temporary password to allow visitors to access and then deactivate it shortly after..
  • 【Durable and Easy DIY Installation】The shell is made of unique 304 stainless steel, and is collision proof, waterproof, and rust proof. Works with a temperature range of 5°F to 140°F. Long battery life lasts up to one year. It fits any door with a thickne....
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Biometric Gun Safe for Pistol, Quick Access Handgun Safe with Fingerprint & Digital Keypad for Firearm, Smart Gun Lock Box with Auto Open Lid, Electronic Pistol Safe for Car with Removable Shelf

  • ...un safe has a pry-resistant steel lid and concealed pry-resistant hinges to offer you complete peace of mind. It ensures that your firearm safe is stronger and more durable. If necessary, you can fix it on the wall or the ground..
  • ✅【RELIABLE LOCKING SYSTEM】: Open it in 1 second! TENAMIC uses the better backlit semiconductor fingerprint reader, which is more accurate and faster than ordinary optical fingerprint reader! The stronger solid steel structure makes it impossible for others to use violence to open it from the outside. Only use the fingerprint or password you set or emergency key, the lid will open..
  • ✅【BETTER CONFIGURATION】: When you enter the correct password/fingerprint, the lid of the gun safe will be automatically opened. Not only that, the inside of the safe is covered with sponge, it can prevent your guns and valuables from being worn out. If you want to be quiet, this gun safe also has a mute function..
  • ✅【NECESSARY ALARM SYSTEM】: TENAMIC pistol safe has a good alarm system. 3 Continuously wrong entries will activate the warning beep for 1 minute. You can also press "4" for 3 seconds to turn on the vibration alarm function. Enter the correct fingerprint or password can stop the alarm..
  • ✅【SIZE AND PACKAGE】: Exterior S....
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Memory

  • [3S Cool Down 18°F] The Ku Peltier Radiator is the secret to this neck AC device. With the 0.9 x 0.9 inch Ceramic semiconductor radiator built-in, the COOLIFY neck air conditioner only needs to cool the back of your neck to refresh your entire body in seconds. The semiconductor cooling plate quickly exchanges heat energy and transmits coldness to the skin, resulting in a noticeable decrease in body temperature by 18°F in just 3 seconds!.
  • [3D Airflow and Double Vent Design] The COOLIFY neck fan's 3D Airflow Design features 36 air vents that offer an immersive cooling experience. The upward vents blow cool air towards your face, while the downward vents prevent discomfort from long-term wear by cooling the skin on your neck. With the patented Air Duct, a 5000 RPM High-Speed Motor, and a 41 mm Super Wearable Air Conditioner, the COOLIFY neck fan maximizes the efficiency of the cooling process..
  • [Designed for Comfort] COOLIFY bladeless neck fans is the ultimate neck fan for maximum comfort and convenience. Its bladeless design and metal honeycomb mesh ensure safety and prevent hair tangling. The soft silicone material is adjustable to fit any neck size. Weighing ....
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[2023 New] 11-12 Fireproof Biometric Gun Safes for Home Rifle and Pistols, Heavy Duty Anti-Theft Long Gun Safes for Rifles and Shotguns with 3 Handgun Pocket, Removable Shelf, Silent Mode

  • ...es. Our gun safe weighs up to 112 pounds, so it's hard for anyone to steal it or you can also fix the safe on the floor or wall with bundled screws to further prevent the risk of theft..
  • 【ADVANCED FINGERPRINT LOCKING SYSTEM】: Our biometric gun safe uses the better semiconductor fingerprint reader, which is more accurate and faster than ordinary optical fingerprint reader! The stronger solid steel structure makes it impossible for others to use violence to open it from the outside. Only use the fingerprint or password you set or emergency key, the door will open..
  • 【FOUR UNLOCKING METHODS】: Our rifle safe is designed with biometric , keypad and spare keys for 1S quick access and also included an external battery box that you can use if your combo batteries go out and you need to get in the safe. 100 fingerprints can be added..
  • 【ANTI-THEFT ALARM SYSTEM AND SILENT MODE】: Our rifle safe has anti-theft alarm systems. Enter the wrong password 3 times or wrong fingerprint 5 times, the system will lock and alarm for 1 minute. If someone tries to move it while it is locked, the alarm will also sound. You can also set....
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