Reviews Sound Level Meter With Alarm

SM-130DB Digital Decibel Meter Reader and Sound Level Meter Type 2 with Calibration Certificate. Measurement Device for Environmental and Mechanical Noise Monitor - Manufacturing, Office, Classroom

  • ✔ SOUND DECIBEL METER TYPE 2 - Digital sound level meter with calibration certificate - Reliable meter for measuring loudness, sound and noise levels from environmental and mechanical sources..
  • ✔ MEASUREMENT SOUND LEVEL - Operating range from 35dB 130dB(decibel) - Applicable standard: EN 61672 type2..
  • ✔ SOUND LEVEL METERS - Noise measurement device for application applications include: Environmental and machines noise tester, warehouses, factories, office buildings, restaurants, schools, classrooms, library, hospitals, art galleries, stadiums, building security..
  • ✔ ACCURATE AND RELIABLE - 1/2 inch electret condenser microphone, Accuracy ±1.8dB (ref 94dB@1KHz) and 0.1dB resolution..
  • ✔ 100% MONEY BACK GUARANTEE 2 YEARS WARRANTY ensures this will quickly become your favorite no-risk purchase..
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BTMETER BT-5800G Ammonia Gas Detector Sensor, Test for 0~100 PPM Nh3 Monitor Gauge with Temperature Humidity Tester

  • ...he included USB cable can be connected to the plug for charging. Built with green / red charging indicator light. Remaining power indicator, Auto / Manual power off optional to save your battery..
  • ✅【Alarm Indicator Light】AL1 and AL2 alarm limit values are adjustable. Slow light flash and buzzer indicates alarm level “AL1” reached, Rapid light flash and buzzer indicates alarm level “AL2” reached.This handheld Ammonia detector portable and comes with storage case for testing around.
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Extech SL400 Personal Noise Dosimeter with USB Interface

  • Measures frequency weighted noise exposure and peak (C, Z) sound level.
  • Datalog's up to 999,999 readings when used as a sound level meter with sampling times between 1 second and 24 hours.
  • Sound level mode: displays sound level, min/max, time-averaged sound level (Leq), peak, and sound exposure level (SEL).
  • Adjustable Criterion Level, Exchange Rate and Threshold.
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EMF Meter, Rechargeable Digital Electromagnetic Field Radiation Detector Hand-held Digital LCD EMF Detector, Great Tester for Home EMF Inspections, Office, Outdoor and Ghost Hunting

  • Why Do I Need An EMF Detector?- There is a good reason I’m always suggesting people purchase an EMF meter once they understand how dangerous long-term exposure to EMF radiation is..
  • No Guess Working Enjoy Your Life- Have a carry-on EMF Reader, then take no guess working with your home devices..
  • Does an EMF Meter Detect WiFi?- RDINSCOS EMF Meter that has the capability of reading radio frequency radiation is capable of detecting WiFi, since WiFi is a type of radio frequency transmission..
  • Auto sound-light alarm- When the test readings exceed the safe value,the EMF radiation meter will alarm automatically, the screen light will flash, and show “Harmful” on display..
  • The EMF METER itself is not electrical radiation- Direct current is not electric radiation, so no worry about the EMF meter itself..
  • Warranty – All RDINSCOS EMF meter are backed by a full 3-year warranty..
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AirKnight 3-in-1 Decibel Meter Sound Level Reader + Humidity & Temperature. Classroom Noise Meter, Sound Meter, SPL Meter & DB Meter Wall Mounted. Sound Level Meter, Decibel Reader Noise Decibel Meter

  • ✅ KEEP IT DOWN!!!: The AirKnight digital dB meter is just what the doctor ordered! Now, you’ll have exactly the authority (and numeric proof) you need to tell your kids, colleagues, classroom, band, or that noisy neighbor to “take it down a notch.”.
  • ✅ EXTRA LARGE LCD DISPLAY & WALL MOUNT: Our digital sound level meter is equipped with a high-definition backlit LCD screen, so that you can effortlessly read it throughout the day at your convenience. Unlike handheld sound level meters, our premium wall-mountable dB meter is simple to set up and perfect for continuous monitoring..
  • ✅ VERSATILE & LONG-LASTING: Our classroom noise meter can be used all over your space. It’s wall mountable with a 10ft power cord, flat-bottomed for placing on tables, and lasts for hours unplugged with a 2000MaH battery. Also, it can be a home theater SPL meter by the TV or in your garage workshop..
  • ✅ BONUS FEATURES: We’ve included bonus HUMIDITY and TEMPERATURE readings in addition to bringing you the best decibel meter we could. And to top it off, the AirKnight sound level tester has 3 ADJUSTABLE SPEEDS (1. Fast 2. Medium 3. Slow) to make reading it a breeze..
  • ✅ 2 YEAR WARRANTY AVAILABLE: AirKnight is an American company that works tirelessly to ensure the ov....
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Upgraded 2 in 1 Door Stop Alarm, Portable Door Stopper Security Door Wedge Intruder Alert Floor Door Stop Alarm with 120DB Siren for Home & Travel

  • ...ps wake/alert homeowner or renter, helps deter intruder and possibly notifies neighbors,security protection. Can be used in home and travel..
  • 【NON-SKID DOOR STOPPER】the door stopper alarm in "off" status,Its high damping rubber bearing can prevent the door sliding,keep the door in open position,no any loud alarm sound..
  • 【3 Level of Sensitivities】Hige-Midium- Low Sensitivities, with an adjustable sensitivity switch on the side. The level of "H" is the most sensitive level and the level of "L" is the low sensitive level. It means to replace the new battery if the alarm sound gradually becomes smaller..
  • 【EASY TO USE】No installation required and no wiring needed. Power by battery (Requires 1x9V battery,not included). Simply place the alarm behind any door (home, hotel, etc). It is very covenient to carry and easy to use when you travel or stay indoor alone..
  • 【PORTABLE DOOR STOPPER ALARM】Package include 1 * door alarms, weight about 120g. Easy to carry and use. Alarm loud 120db to protect you. Suitable for home or travel. Great choice for bedrooms, hotels, apartments, dorm rooms, front doors, etc. Peace of mind when traveling or living/working alone..
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Door Stop Alarm, Upgraded 2 in 1 Portable Door Stopper Security Door Wedge Intruder Alert Floor Door Stop Alarm with 120DB Siren for Home & Travel

  • ...lps wake/alert homeowner or renter, helps deter intruder and possibly notifies neighbors,security protection. Can be used in home and travel..
  • NON-SKID DOOR STOPPER – the door stopper alarm in "off" status,Its high damping rubber bearing can prevent the door sliding,keep the door in open position,no any loud alarm sound..
  • 3 Level of Sensitivities : Hige-Midium- Low Sensitivities, with an adjustable sensitivity switch on the side. The level of "H" is the most sensitive level and the level of "L" is the low sensitive level. It means to replace the new battery if the alarm sound gradually becomes smaller..
  • EASY TO USE - No installation required and no wiring needed. Power by battery (Requires 1x9V battery,not included). Simply place the alarm behind any door (home, hotel, etc). It is very covenient to carry and easy to use when you travel or stay indoor alone..
  • PORTABLE DOOR STOPPER ALARM – Package include 1 * door alarms, weight about 120g. Easy to carry and use. Alarm loud 120db to protect you. Suitable for home or travel. Great choice for bedrooms, hotels, apartments, dorm rooms, front doors, etc. Peace of mind when traveling or living/working alone..
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Solar Strobe Light with Remote Controller, Solar Alarm Light with Motion Detector Solar Alarm Light 129db Sound Security Siren IP65 Waterproof, Protected Your Home, Farm, Barn, Barn,Villa,Yard (Red)

  • Unique 4 modes: ①24 hours with flash & alarm ②24 hours with flash only③ in the night with flash & alarm ④in the night with flash only.
  • Sensitive motion sensor will detect any movement within 5-8 meter and activate the sound light alarm, The siren horn sound is 129db, can be heard from 2000m away.
  • Long press 5 seconds to turn on. 6-8 hours solar charging can work for 30 days with one charge. The Alarm lamp is with IP65 waterproof and screw installation..
  • Motion sensor strobe light is suitable for the safety of residential house, farm, villas, hotels, markets, boarding house and other places where requiring security alarm..
  • [GUARANTEE] We provide 100% money back guarantee if you are not completely satisfied with our solar powered sound and light alarm. Feel free to contact us if you have any questions.ifferent sizes..
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Feixi Door Stop Alarm, Upgraded 2 in 1 Portable Door Stopper Floor Door Stop Alarm Security Door Wedge Intruder Alert with 120DB Siren for Home & Travel

  • ...lps wake/alert homeowner or renter, helps deter intruder and possibly notifies neighbors,security protection. Can be used in home and travel..
  • NON-SKID DOOR STOPPER – the door stopper alarm in "off" status,Its high damping rubber bearing can prevent the door sliding,keep the door in open position,no any loud alarm sound..
  • EASY TO USE - No installation required and no wiring needed. Power by battery (Requires 1x9V battery,not included). Simply place the alarm behind any door (home, hotel, etc). It is very covenient to carry and easy to use when you travel or stay indoor alone..
  • 3 Level of Sensitivities : Hige-Midium- Low Sensitivities, with an adjustable sensitivity switch on the side. The level of "H" is the most sensitive level and the level of "L" is the low sensitive level. It means to replace the new battery if the alarm sound gradually becomes smaller..
  • PORTABLE DOOR STOPPER ALARM – Package include 1 “HEWUQI”door alarms, weight about 120g. Easy to carry and use. Alarm loud 120db to protect you. Suitable for home or travel. Great choice for bedrooms, hotels, apartments, dorm rooms, front doors, etc. Peace of mind when traveling or living/working alone..
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