Reviews Signal Detection System

sectelli 2023 Enhanced Doorbell Camera Wireless, Support WiFi at 5GHz Mixed with 2.4GHz, Support Link to Alexa Speaker, 1080P Video, 2-Way Audio,Battery Powered,Smart Video Doorbell

  • ...re patient in reading the user manual and watch the video. Kind reminder: Weak WiFi signal may cause fast power consumption, easy disconnection, video delay, and voice delay etc. we strongly recommend you install the doorbell in a location with strong WiFi signal..
  • [Motion detection] This doorbell uses a thermoelectric infrared sensor as the detection device for motion detection. The sensitivity of the sensor can be adjusted in three gears: high, medium, and low. Both moving people and objects can trigger the sensors in the doorbell, but you can adjust the sensitivity to change the wake-up condition of the doorbell..
  • 【Battery capacity and standby time 】This wireless doorbell built-in a 5200mah rechargeable battery. According to our testing, when the doorbell wakes up 10 times per day, the battery can stand by for 4 months. In practical use, the number of times the doorbell wakes up every day and the WiFi signal strength of the doorbell have the most impact on standby time. Installing the doorbell in a strong signaled position and turning off motion detection is the most energy saving way to use it..
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BIQU Filament Break Detection Sensor Module 3D Printer Accessories with 1M Cable for 1.75mm Filament Extruder Material Run-Out Detector for 3D Printer (Transparent)

  • ❤【Function of Filament Detection Module】 To detect Filament in 3D printer run-out,pause detection,it automatically stops the 3D Printer when the filament runs out.Optimize the inlet port/outlet port of the material detection module, to reduce the resistance of the feeding material..
  • ❤【Filament Break Detection Module】When there is material, the level signal of the detection port should be high level. When there is no material, the level signal of the material port goes low, and the system detects one. If the high-to-low transition is determined, the material is considered exhausted and a pause command is executed..
  • ❤【Detection Method】The material detection module uses the level jump detection method..
  • ❤【Filament Size】 It Suitable for 1.75mm Filament with 1m cable which making your printing work goes smooth and relieved..
  • ❤ 【After-Sales Guarantee】We support high quality after-sales Service,any questions or feedback please contact us,no matter what refund or resend. We will satisfy with your request..
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AD8317 Logarithmic Detector, RF Log Detector Logarithmic Detector, Logarithmic Detector RF Signal Log Output Power Meter 1M-10000MHz Controller

  • [Main function]: This logarithmic detector is designed for ADI's AD8317 chip and is used for RF signal power detection..
  • [Detection frequency range]: The detection frequency range of the logarithmic detector is 1M-10GHz, and it can detect RF signals with a power of -55dBm to -0dBm, and convert the RF signal into a DC voltage output..
  • [Excellent performance]: The greater the RF signal amplitude or power, the higher the output voltage, and the output voltage is proportional to the logarithm of the input signal amplitude, which will expand the dynamic range of the detected signal by 55dB..
  • [Wide use]: The logarithmic detector is widely used in radio frequency signal detection, signal power measurement, environmental field strength detection, and can also be used as a component of automatic gain control and automatic level control..
  • [Stable and durable]: This logarithmic detector can withstand high and low temperatures, is stable and durable, with a temperature measurement range of 0°C to 1024°C, and a converter temperature resolution of 0.25°C..
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AD8317 1M-10GHz 60dB RF Power Meter Logarithmic RF Signal Power Detector Controller for Amplifier

  • EASY TO USE :The logarithmic power meter adopts AD8317 chip design, which is convenient to use, small in size, high in efficiency, easy to install, stable and reliable, and is used for radio frequency signal power detection..
  • DETECTABLE :The logarithmic power meter has strict quality control and quality assurance. It can detect the power of the radio frequency signal from -55dBm to 0dBm, and convert the radio frequency signal into a DC voltage output..
  • DYNAMIC RANGE :The greater the amplitude or power of the radio frequency signal, the higher the output voltage, and the output voltage is proportional to the logarithm of the input signal amplitude, thereby expanding the dynamic range of the detection signal to 55dB..
  • WIDELY USED :The logarithmic power meter adopts advanced technology and exquisite craftsmanship, and has been improved to improve durability. Logarithmic detector can be widely used in radio frequency signal detection, signal power measurement, and environmental field strength detection..
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Brainrush (Brainrush Series Book 1)

  • Anti-spy detector and GPS detector are upgraded, equipped with the latest upgraded chipsets, strong anti-interference ability, high sensitivity, more powerful magnetic detection, signal detection frequency detection range, longer working time, more stable and accurate..
  • Upgrade a GPS Camera RF Signal Detector provides magnetic field detection and RF Signal detection at the same time, enabling faster and more accurate detection of hidden spy devices. it can effectively prevent eavesdropping, taking photos and personal privacy disclosure..
  • The electronic sweeper for tracking devices can accurately detect various eavesdroppers, GPS locators, trackers, 1.2G~6.5G wireless camera, 2G/3G/4G signal from SIM card bug and other equipment. GPS detector can effectively prevent your privacy from leaking, take your privacy safety to the next level..
  • The GPS camera listening device finder detector is suitable for professionals, personals, travelers and businessmen. The Bug sweeper detector can be used in in hotel rooms, bathrooms, bedrooms, business negotiations, confidential meetings, fitting rooms, locker rooms, private homes etc. ....
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Hidden Devices Detector，Hidden Camera Detectors，Anti Spy Detector，Bug Detector， Listening Device Detector, RF Signal Detector

  • ...less pinhole cameras, cable cameras, electrical radiation sources andso on. It can effectively prevent eavesdropping, secret-filming, and help in protection of personal privacy data and information confidentiality..
  • 【5 levels of Sensitivity】The sensitivity can be changed by altering the potentiometer，Effective detection of 30㎡ range area。 (increase sensitivity, widen detection range, reduce sensitivity, shorten detection range, and identify radio wave sources faster and more accurate.).
  • 【Multiple Detection Modes】more detection modes: 1. radio frequency wireless signal detection 2. UG magnetic field signal detection 3.LED signal display detection.4. flashlight auxiliary lighting，Radio frequency detector can detect radio waves, 2G, 3G, 4G mobile signal, SIM card bug. Frequency detection range 1Mhz – 6.5Ghz..
  • 【Durable and Lightweight】Light weight, small size, suitable for various places, such as hotels, conference rooms, bathrooms, locker rooms, residences, offices, examination places.Built-in rechargeable battery, after charging can be standby time can up to 30 days, no need to replace the battery.More convenient to use and carry..
  • 【Easy to Use】Although the product has many functions, but the use of the method is very simple, only....
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1-600MHz RF Signal Power Meter Logarithmic Detector -74dBm to 18dBm Radio Frequency Detection

  • The detector is is used for RF signal power detection of frequency range between 1MHZ and 600MHZ.
  • It can detect a rf signal of power from -74dBm to 18dBm, and convert the RF signal into a DC voltage output.
  • The higher radio frequency signal range or power is, the higher output voltage will be.
  • output voltage is proportional to logarithm of input signal range.
  • Widely used for RF signal detection, signal power measurement, environment field strength detection, can also be used as a part of automatic gain control and automatic level control.
  • It can be made into 1mw ~ 1kw RF power meter after appropriate transformation.
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Metal Detector Gold Finder Underground Metal Scanner with High Definition Screen for Gold Silver Copper AC100‑240V(US Plug)

  • HIGH ACCURANT: The treasure finder can accurately determine where the object is buried and locate it, can identify specific types of metal through the frequency regulator, and have a remote search system and an accurate location detection system..
  • EFFICIENT: The microelectronic processor is used to control the chip unit calibration and instrument self test system, which can scan and test easily and quickly, and improve the work efficiency of treasure hunters..
  • HIGH SENSITIVITY: The metal finder has high sensitivity and stability, it can identify different types of metals, and can easily find metal objects that are useful to you..
  • PRACTICAL: The detection range of silver detector can arrive 99m, and the underground detection depth can arrive 16m. It is widely used in security inspections, archaeological treasures, etc..
  • APPLICATION: This gold detector is made of ABS material, you can use it to explore more places to find treasures, looking for gold, silver, copper and gems. For other metals, can not be detected. Products need to be used in an open and interference-free environm....
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Steve Meade Designs SMD DD-1+ and CC-1 Combo Pack

  • The distortion detection circuitry is 100% analog, digital microprocessing system used for display and calculation of overlap.
  • Distortion Detection trigger level > 1.0% Harmonic Distortion.
  • 3 stage autoranging for wide range of input signal from 1Vrms – 200Vrms. (40,000 Watts at 1 ohm).
  • The Crossover Calibrator’s circuitry is digital microprocessor controlled.
  • Crossover -3dB point accuracy +/- 0.25dB.
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New Deal

  • ...en and corporations have relied upon the Discover It - Ultimate Bug Detector Bundle to ensure their MAXIMUM level of privacy and security? Get ready to experience your greatest level of personal privacy yet!.
  • HAVE AMAZING PROFESSIONAL 5 STAR RESULTS WITHOUT QUESTIONING THE DETECTION RESULTS - Do you want to have amazing 5 STAR detection results each and every time you scan your home, car, office & conference board room or hotel room? Its never been easier to sweep and detect hidden bugs, hidden cameras or malicious RF signals. Simply use your Discover It - Ultimate Bug Detector Bundle to keep your most private times safe and secure, you will experience the difference!.
  • ️EXPERIENCE THE BENEFITS OF ULTIMATE ANTI-SPY DETECTION - If you are looking for a complete anti-spy and counter surveillance system that has been engineered to detect signals across the widest range available on the market, then your are ready for the Discover It - Anti-Spy Counter Surveillance Bug Detector Ultimate Bundle!.
  • PROTECTION FROM OUTSIDE THREATS FROM THE HOME TO THE BOARDROOM - If you want protection from the prying eyes of hidden cameras, l....
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3-Pack 1.75mm 3D Filament Detection Module Run-Out Pause Detecting Monitor Filament Sensor for Ender 3 Pro CR-10 3D Printer and Lerdge Board

  • ...hether your printing is run out of filament. During printing if the unit detected that there is out of filament it will send a signal to the main board. With correct firmware settings the printing will paused untill the operator reload the filament and resume the printing..
  • The inlet port/outlet port of the material detection module are changed from the original metal copper sleeve to the rotating funnel opening design, which optimizes the resistance of the feeding material, makes the feeding smoother and eliminates the material/filament, and avoids the phenomenon of filament stucking and planing..
  • The arrow direction of the inlet position is silk screen, which is convenient for distinguishing the direction of the inlet and the outlet..
  • Used with Lerdge board: When there is material in, the green light in the module keeps lighting. And when the material is exhausted, the green light goes off, then the motherboard executes the pause command operation, after the replacement of the material, can continue to print. Wiring: Connect the module to the M-sensor port on the motherboard..
  • Used with other motherboards: The material detection module uses the level transition detection method. When with material in, the detection level signal should be high, and....
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Steve Meade Designs SMD DD-1+ Distortion Detector Plus

  • The distortion detection circuitry is 100% analog, digital micro-processing system used for display and calculation of overlap.
  • Distortion Detection trigger level > 1.0% Harmonic Distortion.
  • 3 stage autoranging for wide range of input signal from 1Vrms – 200Vrms. (40,000 Watts at 1 ohm).
  • Auto-shut off timer 8 - 10 minutes after ON button is pressed.
  • Battery self-test and display of condition when DD-1+ is initialized.
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Bindpo RF Logarithmic Detector, 1M-10000MHz AD8317 Radio Frequency Logarithmic Detector Power Meter, for RF Signal Power Detection/Radio Frequency Signal Detection

  • The product is designed by using AD8317 chip, and is used for RF signal power detection..
  • Can detect power in -55dBm to -0dBm of an RF signal, so that the RF signal is converted to DC voltage output..
  • The greater the amplitude or power of the RF signal, the higher the output voltage, and the output voltage is directly proportional to the logarithm of the input signal amplitude, thus expanding the dynamic range of the detected signal, which ranges reach 55dB..
  • It can be widely used in radio frequency signal detection, signal power measurement, environmental field strength detection..
  • It can also be used as part of automatic gain control and automatic level control..
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