Top Wireless Ultrasonic Water Level Sensor Reviews

Portable Mini Cool Mist Battery Humidifiers,600ml USB Personal Desktop Humidifier,2000mAh Battery With Digital Display,Night-Light Battery Humidifier for Bedroom,Office,Home,Travel,plant (White)…

... HUMIDIFIER】This humidifier has a built-in 2000 mAh battery. You can use it without being limited by the charging cable. Enjoy your life easily anytime, anywhere.Humidifier with digital display, you can always observe the power usage. It is the wireless humidifier that you must choose for your life..
【QUIET ULTRASONIC OPERATION】Ultrasonic humidifiers produce a near-silent frequency 30dB (quieter than a library) ensuring ultra-quiet operation. This humidifier won’t bother you while sleeping and working..
【PERSONAL SMALL HUMIDIFIER】This mini humidifier has two modes. When you flick the switch once to turn on the continuous spray mode, the maximum working time is about 8 hours（After the battery is fully charged）. When you flick the switch twice to turn on the intermittent spray mode, the maximum working time is about 16 hours.The humidifier also comes with a small night light to make your sleeping environment easier..
【BATTERY HUMIDIFIER】There is built-in water level sensor inside that will automatically turn off the power when the water is lower than the safe water level. And the seal is strong,no longer afraid of pouring liquid to leak in accidence.What problems in use please leave a message to contact the seller in time to deal ....

Check Stock

AOICRIE 5pcs HC-SR04 Ultrasonic Sensor Distance Module for Nano Robot XBee ZigBee by ElecRight for Ultrasonic Proximity Sensors Motion Detectors (5PCS)

Test mode :HC-SR04 ultrasonic sensor can send eight 40 kHz and detect whether there is any pulse signal back.If it back, a high level signal will be outputed by IO, and the duration of the signal is the time from sending ultrasonic to returning..
HC-SR04 Ultrasonic Sensor Distance Module: using IO trigger for at least 10us high level signal..
Quiescent current: less than 2mA, Test distance = ((Duration of high level)*(Sonic :340m/s))/2..
The detection zone: 0.78~196 in/ (2cm~500cm).
High precision: up to 0.12 in/(0.3 cm) Effectual angle: less than 15°.

Check Stock

2023 Solar Ultrasonic in Repellent Defender Rat, Squirrel, Deer, Raccoon, Skunk, Rabbit, Mole, Dog, Cat, Waterproof with Motion Detector

Repels Burrowing Animals in A Humane Way - Animal Repellent Ultrasonic Outdoor Solar Powered repels unwanted animals by emitting ultrasonic sound and flashing when the PIR sensor detects a motion. It would make an uncomfortable circumstance where the animals are unbearable to stay and move to other places in 2-4 weeks..
Wide Motion-Activated Sensor to Drive Away the Animal Automatically - This ultrasonic cat repellent outdoor is 110degree infrared sensor angle, max detection range is 25- 30feet. The detection distance reduces with smaller animal sizes. Make sure to load enough repellents so as to cover up all the protected area. Note: Birds at ground level may be easily detected, but birds flying are more challenging to detect..
Solar Powered or USB Charged with Rechargeable Batteries - This Solar raccoon repellent deer repellent marten repellent ultrasonic can be charged via solar panel or USB cord (included), it includes 3xAA 800mAH NiMH batteries (included and replaceable), which can last up to 5-7days after fully charged. USB charge method can make sure you get charged during continues raining and cloudy days..

Check Stock

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.

Check Stock

XMSJSIY Led Mist Maker, Indoor Fountain Foggers Water Pond Fog Machine Atomizer Air Purifier Humidifier for Birdbath Halloween and Holidays Decoration…

Fresh air: this is ultrasonic fogger, and keep the indoor air natural and fresh with LED is placed in a container with a water depth of 50-70mm, (the atomizing effect is best when the atomizing sheet is about 30~50mm away from the water surface..
The mist maker with beauty humidifying air function: turn water into fog, moisturize the air and continuously increase air humidity..
Led mist maker uses high frequency ultrasonic vibration to enter water and release a large amount of water mist, The evaporation capacity is about 350ml/h. 12 LED color lights automatically change color to create a dreamy atmosphere..
Safe use: the atomizer adopts 24V output voltage safety design and is equipped with intelligent sensor. Once the water level is lower than 1.38 inches and the water surface does not exceed the water level sensing switch, the power supply will be turned off automatically..
This atomizer adopts ceramic wafer. Compared with the traditional atomizer with nickel or titanium as electrode, the ceramic wafer has superior performance in protecting electrode, high electrode strength, not easy to scale and prolong service life..

Check Stock

Pure Guardian H3200WAR Ultrasonic Cool Mist Humidifier

COOL MIST HUMIDIFIER: The PureGuardian H3200WAR ultrasonic cool mist humidifier guards against dry air in the home, perfect for those with colds, allergies and dry skin. The easy fill 1.5 gallon tank covers 440 sq. ft. rooms and runs up to 100 hours.
SILVER CLEAN PROTECTED TANK: Silver Clean Protection fights the growth of slimy mold and mildew on the surface of the water tank-a common problem with traditional humidifiers.
ULTRASONIC TECHNOLOGY: The H3200WAR disperses a soothing, cool mist into the air and is ultra-quiet, making it ideal to have on while you sleep. A smart mist sensor monitors the level of humidity in the room and adjusts to your selected level.
AROMATHERAPY TRAY: Aromatherapy essential oil tray helps create a relaxing environment. Oils are not included. Create a better home environment and optimize your comfort with an ultra-quiet, soothing cool mist. 1 essential oil pad included.
ADDITIONAL FEATURES: Easy to use variable 3-speed mist control, on/off night light, timer, multi-directional mist, low water indicator light that illuminates when it's time to refill the tank, automatic shut-off when tank is empty.

Check Stock

Winfend Solar Animal Repeller Ultrasonic Outdoor, Deer Repellent Raccoon Repellent Ultrasonic with Motion Sensor, Deter Unwanted Critters Such as Deer Raccoon Squirrel Dog Cat Birds Marten Fox

No Chemical, Repels Animals & Pest in A Human Way - Animal Repellent Ultrasonic Outdoor Solar Powered repels unwanted critters by emitting ultrasonic sound and flashing when the PIR sensor detects a motion. It would make an uncomfortable circumstance where the animals are unbearable to stay, and move to other place in 2-4weeks..
Wide Motion-Activated Sensor to Drive Away the Animal Automatically - This ultrasonic animal repeller outdoor is 110degree infrared sensor angle, max detection range is 25- 30feet. The detection distance reduces with smaller pest sizes. Make sure to load enough repellents so as to cover up all the protected area. Note: Birds at ground level may be easily detected, but birds flying are more challenging to detect..
Solar Powered or USB Charged with Rechargeable Batteries - This Solar raccoon repellent deer repellent marten repellent ultrasonic can be charged via solar panel or USB cord (included), it includes 3xAA 800mAH NiMH batteries (included and replaceable), which can last up to 5-7days after fully charged. USB charge method can make sure you get charged during continues raining and cloudy days..
Different Frequency Modes with Ultrasonic Sound and Flashes - This Sonic Animal deterrent Outdoor can repel raccoon, deer....

Check Stock

HiLetgo Analog Current Meter Sensor Module AC 0~5A Ammeter Sensor Board Based on TA12-100 for Arduino

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 × T × C ( L is the distance, T is the time between the emission and reception, and C is the sonic speed ).
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.

Check Stock

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.

Check Stock

Ultrasonic Animal Repeller, Solar Powered Cat Repellent, Sonic Animal Deterrent with PIR Motion Sensor, Waterproof Battery Operated Scarer for Gardens Yard Field Farm (A)

【Powerful Ultrasonic and Alarm】Infrared PIR motion sensor can detect the animals, when it detects that the moving animal is in the detection range, it automatically emits the frequency of the sound, flashing LED glare and causes the animals. The solar powered animal repeller frightens intruding animals, motion sensor will emit ultrasonic waves and LED lighting makes the animal feel uncomfortable and run away, and pests to leave the area Without harm humans..
【Adjustable Sensitivity and Frequency】The solar repeller has a high acoustic emission level with an acoustic coverage of up to 8M. The infrared sensor has a angle of 110 degree. You can adjust the item sensitivity and frequency according to different environments to increase the range of protection. The siren is very useful for driving animals. Since it's an ultrasonic sensor, you can hear a little bit of sound. It's harmless to humans and animals, but we recommend keeping it outside..
【Solar & USB Powered】 Ultrasonic cat repellent is equipped with a solar panel on its top, solar panels will automatically absorb sunlight to charge the device, no need to artificially charge under normal weather. If you are experiencing long-term rainy weather, you will need to use an adapter to charge yo....

Check Stock

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..

Check Stock

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.

Check Stock

MySpool Water Level Alert with Text Message and Email Notifications, Battery Powered with a Float Sensor

Email and text message notification when water level change is detected. All services are free..
Battery powered wireless water level detector using your WiFi, no app to install and no hub is required. Perfect as a standalone high or low water alarm..
Waterproof float sensor with a 3 ft wire connected to a rugged enclosure protecting smart electronics. This float sensor can be used to detect high or low water levels, the default setting detects high water levels. Flip the float ring and use this device to detect low water levels in aquariums, ponds, and storage tanks..
Alert is sent if the float rises to signal high water level. Flip the float ring to send alert when water level falls. 3 AAA batteries, included, last for years with limited activity..
Rugged enclosure supports up to 250 lbs, designed to operate in dusty and moldy environments. Avoid costly repairs by keeping MySpool Water Detector anywhere that has the potential for flooding or developing a leak..

Check Stock