Reviews Ultrasonic Distance Meter

5pcs Ultrasonic Module HC-SR04 MELIFE Distance Sensor with 3pcs Mounting Bracket 2 Wire Set for Mega R3 MEGA Mega2560 Duemilanove Nano Robot XBee ZigBee

  • Parameter -- New Version Power Supply: 3.3V -- 5V DC.
  • Operating Principle: Ultrasonic HC-SR04 distance measuring transducer sensor, it consists of ultrasonic transmitter, receiver, and control circuit..
  • HC-SR04 ultrasonic sensor module: Using IO trigger for at least 10us high level signal, when triggered it sends out a series of 40KHz ultrasonic pulses and receives echo from an object, the duration of the signal is the time from sending ultrasonic to returning..
  • Test Distance Formula: The distance between the unit and the object is calculated by measuring the traveling time of sound and output it as the width of a TTL pulse, HC-SR04 test distance following formula -- L = 1/2 x T x C (L is the distance, T is the time between the emission and reception, and C is the sonic speed)..
  • Package Include: 5 x New Version HC-SR04 Ultrasonic Sensors, 3 x Mounting Bracket with Screws, 10 x Female-Male Dupont Cables, 10 x Female-Female Dupont Cables..
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Songhe HC-SR04 Ultrasonic Sensor Module Distance Measuring Sensor Module for Arduino UNO MEGA2560 Nano 5pcs

  • Operating Principle -- Ultrasonic hc-sr04 distance measuring transducer sensor, it consists of ultrasonic transmitter, receiver, and control circuit..
  • HC-SR04 ultrasonic sensor module -- Using IO trigger for at least 10us high level signal, when triggered it sends out a series of 40KHz ultrasonic....
  • Test Distance Formula -- The distance between the unit and the object is calculated by measuring the traveling time of sound and output it as the....
  • Package Include -- 5 X HC-SR04 Ultrasonic Sensors , 10 X Female-Male Dupont Cables , 10 X Female-Female Dupont Cables , 3 X HC-SR04 Mounting Bracket.
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SunFounder Ultrasonic Module HC-SR04 Distance Sensor Compatible with Arduino R3 Mega2560 Duemilanove Nano Robot Rapsberry Pi 4B 3B+, 3B, 2 Model B & 1 Model B+

  • Ultrasonic hc-sr04 distance measuring transducer sensor, it consists of ultrasonic transmitter, receiver, and control circuit..
  • HC-SR04 Ultrasonic Sensor Distance Module: using IO trigger for at least 10us high level signal，When triggered it sends out a series of 40KHz ultrasonic pulses and receives echo from an object..
  • Hc-sr04 Test Distance following formula: L = 1/2 × T × C ( L is the distance, T is the time between the emission and reception, and C is the sonic speed).
  • Package Content: 5 HC-SR04 Ultrasonic Sensors , 10 Female-Male Dupont Cables , 10 Female-Female Dupont Cables , 1 Exquisite package box.
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Canon EF 24-70mm f/2.8L II USM Standard Zoom Lens

  • 24 70 millimetre focal length, 38.4 112 millimetre equivalent focal length on Canon APS C cameras.
  • F22 minimum, ring type ultrasonic type AF motor with full time manual focusing.
  • 82 millimetre filters, closest focusing distance: 0.38 meter/1.25 feet.
  • Image Stabilization : No. Focus adjustment: Inner focusing with USM. Diagonal angle of view: 84° - 34°. Weight 1.7 pound.
  • Purchase this product between May 1, 2016 and July 30, 2016 and get 13 months of free damage protection from Canon. The product must be registered....
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2PCS TCS34725 RGB Color Sensor Module with IR Filter and White LED I2C Interface

  • Ultrasonic hc-sr04 distance measuring transducer sensor includes an ultrasonic transmitter, a receiver and a control circuit..
  • HC-SR04 consists of ultrasonic transmitter, receiver, and control circuit. When trigged it sends out a series of 40KHz ultrasonic pulses and receives echo from an object..
  • The distance between the unit and the object is calculated by measuring the traveling time of sound and output it as the width of a TTL pulse..
  • Ranging distance: 2cm~450cm: High precision: up to 0.3cm.
  • Input trigger pulse：10us TTL Level Working voltage：5V(DC).
  • Package Content: 5pcs HC-SR04 with a gift of 10 pcs female to male dupont cable.
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Ultrasonic Audio Recording Blocker | White Noise Generator | Powerful Microphone Suppressor Device | Prevent Voice Recording | BDA-3 (FCC, CE & ICES Compliant)

  • ULTRASONIC EXPOSURE + VOICE IMITATION = 100% microphone jamming.
  • HIGH SUPPRESSION POWER AND ACTION RANGE. This microphone blocker emits a very powerful ultrasonic signal (not less than 120 dB) which suppresses microphones at a maximum distance of 7 m (23 ft). The distance is shortened to 2 m (7 ft) for newest iPhone models with an improved noise cancelling system..
  • SOPHISTICATED ULTRASONIC PATTERN that is effective against newest noise-canceling and water-resistant phones. Range and effectiveness can be increased when used with one or more external ultrasonic speakers (sold separately)..
  • 7 ULTRASONIC TRANSDUCERS that ensure protection in front and across the device. Use it as a "virtual wall" to protect yourself from recording devices..
  • CAN BE USED ABSOLUTELY SILENTLY but best results achieved when ultrasonic and white noise interferences are combined..
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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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Canon EF 70-200mm f/2.8L IS III USM Lens for Canon Digital SLR Cameras White - 3044C002

  • Constant f 2.8 Maximum Aperture throughout Entire Zoom Range..
  • Canon’s Air Sphere Coating (ASC) Minimizes Ghosting and Flare..
  • Optical Image Stabilization at up to 3.5 Stops of Shake Correction..
  • Fluorine Coating on Front and Rear Elements to Help Reduce Smears and Fingerprints..
  • Highly Resistant to Dust and Water, and Improved Durability Even in Harsh Conditions. Inner Focusing System with Ring Ultrasonic Motor. Full-time Manual Focus. One Fluorite Element and Five UD Elements for High Image Quality. Minimum Focusing Distance of 3.9 feet, 1.2 meter. Diagonal Angle of View: 34° - 12°.
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2pcs Ultrasonic Module HC-SR04 Distance Sensor with 2pcs Mounting Bracket for Arduino Uno R3 Mega 2560 Nano Raspberry Pi 3 Smart Robotics Projects

  • HC-SR04 Ultrasonic Sensor Distance Module:using IO trigger for at least 10us high level signal..
  • The Module automatically sends eight 40 kHz and detect whether there is a pulse signal back..
  • If the signal back,through high level,time of high output IO duration is the time from sending ultrasonic to returning.Test distance = (high level time velocity of sound (340M/S)/2..
  • Resolution:0.3 cm,Module precision:blind spots (2cm)-SUPER CLOSE..
  • The module performance is stable,measure distance accurately.SRF05,SRF02 ultrasonic ranging module comparable.This module is compatible with GH-311 anti-theft module..
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ALMOCN 6PCS HC-SR04 Ultrasonic Sensor Distance Module Measuring Ranging Sensor for Arduino

  • Ultrasonic hc-sr04 distance measuring transducer sensor, it consists of ultrasonic transmitter, receiver, and control circuit..
  • Hc-sr04 Test Distance following formula: L = 1/2 × T × C ( L is the distance, T is the time between the emission and reception, and C is the sonic speed).
  • Mode of connection:4 pins VCC, Trig (control side), echo (receiver), out (empty),GND.
  • Application:for Robot obstacle avoidance, object distance measuring, liquid level detection, public security, parking lot detection..
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ACEIRMC HC-SR04 Ultrasonic Sensor Distance Module for Nano Robot XBee ZigBee by ElecRight（5pcs

  • HC-SR04 Ultrasonic Sensor Distance Module: using IO trigger for at least 10us high level signal.
  • This module has stable performance and accurate measurement distance..
  • Detection distance: 0.78~196 in/ (2cm~500cm).
  • This module is fully Compatible with GH-311 anti-theft module..
  • HC-SR04 Ultrasonic Sensor Distance Module for Nano Robot XBee ZigBee by ElecRight.
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Coast Polysteel 200 320 Lumen Pure Beam Focusing LED Flashlight with Twist Focus and Stainless Steel Core, Black, 320 Lumens

  • Poly casing, stainless steel core, IPX8 waterproof, 3 meter drop tested.
  • On High: 250 lumen light output, 3 hour 30 minute runtime, 121 meter (396 ft.) beam distance.
  • On Medium: 87 lumen light output, 9 hour runtime, 68 meter (223 ft.) beam distance.
  • On Low: 26 lumen light output, 35 hour runtime, 37 meter (121 ft.) beam distance.
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Silent Ultrasonic Anti-Spy Audio Recording Blocker | Covert Powerful Microphone Suppressor Device | Compact White Noise Generator | Secretly Stops Hidden Voice Recordings

  • MAXIMUM PROTECTION FROM ALL SOUND RECORDING DEVICES USING 7 ULTRASONIC TRANSDUCERS that ensure protection in front and across the device. Use it as a “Virtual Wall” to protect yourself from All Recording Devices..
  • HIGH SUPPRESSION POWER AND ACTION RANGE. This microphone blocker emits a very powerful ultrasonic signal (not less than 120 dB) which suppresses microphones at a maximum distance of 7m (23 ft). The distance is shortened to 2 m (7 ft) for newest iPhone models with an improved noise cancelling system..
  • SOPHISTICATED ULTRASONIC PATTERN that is effective against newest noise-canceling and water-resistant phones. Range and effectiveness can be increased when used with one or more external ultrasonic speakers (sold separately)..
Check Stock