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Best Humidity Detection Method

Fielect 10Pcs HY810A Slot PCB Photo Interrupter Slotted Optical Sensor Switch for Object Detection and Automatic Counting

  • 【Parameters】- Installation method:4PIN.
  • Whether the detection distance is adjustable: not adjustable.
  • 【Structure】- The photoelectric sensor module consist of an infrared transmitting tube and an infrared receiving tube, mini size, compact construction..
  • 【Working Principle】- The sensor optico senses the presence of an object by using the reflective IR beam from the object..
  • 【Application】- Slotted Optical Sensor Switch normally used for the detection of reflective materials such as paper, IBM cards, magnetic tapes, Fax and shredder paper, Obstacle, Black and white line etc..
  • 【Package Contents】- 10Pcs x Infrared Reflective Photoelectric Sensor..
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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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Hidden Camera Detectors,Hidden Devices Detector,Anti Spy Detector Bug Detector, Listening Device Detector, RF Signal Detector ,GPS Tracker Detector

  • ...ess 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..
  • 【12 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，It can accurately detect various eavesdropper radio frequencies from 1MHz to 10GHz..
  • 【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 used for about 30 hours (the length of time depends on the use mode), 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 through t....
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Digital Indoor Thermometer Hygrometer Temperature and Humidity Display with 3.3 inch LCD Table Standing Magnet Attaching for Household Office Gym Kitchen (1)

  • Easy to Use and Read: Open the back cover, install the button battery(include), and then it starts to works. 3.3 inch LCD Display. Reading in Celsius is available with a C/F button at the back side..
  • Accurate: Temperature detection range:14℉- 122℉(-10-50℃),Hygrometer detection range:20%-95%. Temperature measurement accuracy is within ±2 ℃. Accurate Temperature and humidity Providing you with accurate data of temperature and humidity in real time and the trend of temperature change..
  • MAX & MIN Record Function: Max/min date display at the same time, more easy to get the value. The temperature and Humidity Monitor will auto records the Max & Min of temperature and humidity in 24 hours..
  • LCD screen shows a lovely smile when the indoor temperature is in the range of 18℃-26℃ (64℉-79℉) & indoor humidity is in the range of 40%RH-65%RH, otherwise, crying face. It's only need one battery, pls note, it has included in the battery compartment..
  • Widely Household Necessity: Tabletop and magnet-mountable design, convenient mounting feature for every type of room.The Digital Hygrometer Thermometer is perfect for baby room, bedroom, living room, storage room and office..
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Crlincen WiFi Thermometer Hygrometer Monitor: 4 in 1 Digital Light Thermometer Humidity Sensor Meter for Baby Home Indoor Greenhouse with APP Notification Alerts Clock Alert and Low Battery Alert

  • ...y monitor Light temperature and humidity remotely, such as in the baby room, Greenhouse, etc.
  • 4 In 1 Multi-function: The thermometer hygrometer is equipped with Clear LCD screen and ℃/℉ switch, you can check the current temperature humidity Light on LCD display or via Tuya APP.
  • What’s more, the design of light detection will help you to take care more different circumstances.
  • High Accuracy & Fast Response: Temperature range -10℃～60℃ (14℉～140℉), humidity range 0%-100%RH, Light Detection accuracy 0Lux～157000Lux. Real-time updates without delay, which will help you respond faster to sudden changes.
  • Smart Alert Notification: The indoor outdoor thermometer design with Alert Notification, you can set preset temperature and humidity ranges, when the temp or humidity exceeds your presets of the room thermometer, the APP will immediately push an alert to your smartphone, so you can react quickly.
  • Easy to use and install: Connect wifi and download app and pair the room thermometer hygrometer successfully in one minute, which will calibrate automatically within ten minutes.
  • With the screws from package, you can easily place this room thermometer anywhere, or you can put it on the table.
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Anti Spy Detector，Hidden Camera detectors,RF Signal Scanner, GPS Tracker Detection,Audio Bug Camera,Bug Detector, Camera Finder,Shape for Home Office Travel and Hotel(One Product)

  • ...hone eavesdropping, meetings eavesdropping, GPS location trackers, car eavesdropping, wireless 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..
  • 【Multiple detection modes】more detection modes: 1. mute detection 2.Buzzer detection 3.LED signal display detection.It can accurately detect various eavesdropper radio frequencies from 1MHz to 6.5GHz..
  • 【Adjustable sensitivity】The sensitivity can be changed by altering the potentiometer. (increase sensitivity, widen detection range, reduce sensitivity, shorten detection range, and identify radio wave sources faster.).
  • 【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 used for about 8-26 hours (the length of time depends on the use mode), 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 through the "mode button" and "sensitivity adjustment button....
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SUNLU 3D Printer Filament Dryer, FilaDryer S2 Storage Dry Box for 3D Printing, 360° Surround Heating, Large-Size Touch Screen, Remove Moisture from Wet Filaments, Spool Holder, Black

  • ①【Rescue Poor Printing】Newest SUNLU FDM 3D Filament Dryer S2 is more efficient to solve stringing, clogging, poor adhesion, poor printing quality and layer shift of 3d printing filament caused by ambient humidity..
  • ②【360°Embracing Heating】The 3D filament dry box S2 has added upper and lower heating plates to achieve all-round surrounding heating and rapid drying, breaking through the heating temperature to 35℃~70℃..
  • ③【Large-size Touch Screen】New 3.42*2.87inch touch screen, tablet-like operation experience. One-key switching between ℃ and ℉. According to various filament, user-friendly one-key recommended temperature setting..
  • ④【Real-time Humidity Detection】Built-in high-precision humidity detection sensor, displaying real-time humidity inside the filament dryer. Assist to judge the drying effect.Automatic sleep standby after drying..
  • ⑤【High Filament Compatibility】Compatible with all the mainstream 3D filament brands and all standard filament diameters 1.75mm/2.85mm/3.00mm.
  • Works perfectly with PLA、PLA+、PETG、TPU、ABS etc，Including high-end filament PA、PC..
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Digital Thermometer Indoor Hygrometer Room Temperature Monitor Humidity Gauge with Big Screen Stand Wall Hanging Magnet Greenhouse House Kitchen Car

  • Easy to Use and Read: Open the back cover, install the button battery(included), and then it starts to works. 3.3 inch LCD Display temperature and humidity at the same time. Reading in Celsius is available with a C/F button at the back side..
  • Accurate: Temperature detection range:14℉- 122℉(-10-50℃),Hygrometer detection range:20%-95%. Temperature measurement accuracy is within ±2 ℃. Accurate Temperature and humidity Providing you with accurate data of temperature and humidity in real time and the trend of temperature change..
  • MAX/LOW RECORDS: The digital thermometer automatically records the highest and lowest temperature. Reset the records by poke the reset socket on the back of the device..
  • 2 TYPES PLACEMENT: You can put it on the refrigerator with its strong magnet on its back, and place it on table-top with its retractable stand..
  • Widely Household Necessity: Tabletop and magnet-mountable design, convenient mounting feature for every type of room.The Digital Hygrometer Thermometer is perfect for baby room, bedroom, living room, storage room and office..
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Taiss/30 cm Adjustable M18 Diffuse photoelectric Switch Sensor Optical Three Lines NPN NO (Normally Open) Proximity Switch 6-36VDC E3F-DS30C4

  • Whether the detection distance is adjustable: adjustable.
  • Detection method: Diffuse reflection type.
  • Photoelectric switch sensor with integrated circuit technology and SMT surface mount technology, a new generation of optical switch sensor devices, photoelectric switches are manufactured with external synchronization, interference suppression, reliability, regional stability, and self-diagnosis..
  • Photoelectric switch sensor is the use of a test object to block or reflect the beam through a synchronous loop gate circuit to detect the presence or absence of an object. All reflected rays can be detected accurately..
  • The current sensor switch is widely used in mechanical automation, 3D Printer Probe Bed Leveling, paper making, light industry for limiting station, orientation taking count, speeding trial etc..
  • Package contains- 1 x Photoelectric Sensors..
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NPET Cat Fountain PIR Motion Sensor Switch for Pet Fountain

  • 【Sensor】 NPET External Sensor for Water Fountain for Cat and Dog. Range of detection: approximately 3 m. Induction angle: cone angle of 180°..
  • 【Optional Function】 Combined with the infrared sensor module, it detects that an object is approaching or moving, and the water dispenser will....
  • 【High stability】About 3m detection distance. Extended time range: 15s-5min, adjustable stop time. The default setting is to stop working after the....
  • 【Small size and easy to install】 Accessories include screws and a sticker. You can choose the appropriate installation method according to your....
  • 【USB socket】 USB jack wiring method for easy connection. 1.2m input cable, and 0.3m output cable.The total cable length is 1.5m..
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CO2 Detector, Aiment 3 in 1 Carbon Dioxide Detector Air Quality Monitor Temperature Humidity Air Analyzer for CO2 Digital CO2 Meter for Indoor Home Office

  • 【Multifunctional Carbon Dioxide Tester】This 3 in 1 CO2 monitor can detect real-time CO2 concentration, monitor indoor and outdoor humidity, and temperature. CO2 detection range: 400-5000PPM. Temperature detection range: 0-50℃. Humidity detection range: 0-99%RH..
  • 【Full-Color Large Screen】With full-color display and large screen design, this carbon dioxide detector is super easy to read. LED digital display with intelligent backlight, eye protection function, one key operation..
  • 【Large Capacity Rechargeable Battery】The CO2 detector has a built-in large capacity rechargeable battery, standby up to 40hours. You can check the air quality from anywhere, or have the device continuously monitor at a specific location..
  • 【More functions】Intelligent early warning system, high quality infrared NDIR sensor, multiple interference prevention, air convection technology, greenhouse compensation calibration..
  • 【Multi Application】Suitable for agricultural planting, production warehouse, raw material processing, home, school, office, and other occasions. We offer 3 months free return and lifetime warranty for our CO2 detector..
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XIAOSHI 2-Pack 1.75mm 3D Filament Detection Module Filament Run-Out Pause Detecting Monitor

  • Type：Material detection module / Material: Plastic.
  • Used for 1.75mm filament sensor 3D printer /Uses the level transition detection method.
  • Board dimension: 38 x 30 x 13mm /Number of Port: 3 Pin /Cable Length: about 100cm.
  • This item is 3D Filament Detection Module,with material in, the detection level signal should be high, and when no material, the material port level signal goes low..
  • Due to the difference between different monitors, the pictures may not reflect the actual color of the item..
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Smart PIR Motion Sensors: WiFi Motion Detector with Temperature and Humidity Sensor, USB/Battery Powered Movement Detector, Compatible with Alexa Google Home, for Smart Home Automation

  • IR MOTION ALERT SENSOR--APP ALERTS & ANTI-DISMANTLE: Wireless PIR motion detectors,10 meters detection distance,120° effective detection angle, Whether day or night can be real-time monitoring. Once movement is detected or when disassembling with external force, instant notifications will be sent to your devices within a few seconds. Make Your Home Smarter..
  • BUILT IN SMART HYGROMETER AND THERMOMETER: Except for motion tracking, 3-in-1 Smart Motion Sensor alarm access temperature and humidity accurately,Remotely monitor temperature humidity. Send alerts via app when temperature or humidity goes out of preset value.(Support Alxea voice control to query temperature and humidity, and the alerts are sent via the App).
  • DUAL POWER SUPPLY AND LINKAGE FUNCTION: Motion detector alarm indoor can be powered by the included USB cable(included) or CR123A battery(included). More stable to receive alert.Long-term power supply,say goodbye to power outages. It can linkage with other smart home products, such as smart lights or door sensors, etc. Setting custom scenes in your smart home system, for example, turning on the lights if motion is detected..
  • 2.4GHz WiFi One-KEY CONNECT EASY SETUP: Don't need home gateway,you can easily achieve the intelligent control of home a....
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