The 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 Test Distance : high level time velocity of sound (340M/S) /2.
Equipped with anti-reverse pin socket – making the wiring much tighter and convenient.
Uses the MCU STC15W104 which has a built-in clock, no need of external crystal oscillator..
Driveway Alarm, Outdoor Waterproof Motion Sensor, Wireless Driveway Alarm System, 2 PIR Motion Detectors & 1 Receiver, Expandable House Alarm Systems for Home & Property
... Alarm]: Our wireless driveway motion alert is dedicated to home safety protection. And the wireless alarm system includes 1 Receiver & 2 Sensors. More importantly, our PIR motion detector can be used as home alarm, driveway alarm, shed alarm, garage alarm, intruder alarm, burglar alarm, perimeter alarm, etc..
[Long Distance Wireless]: The perimeter alarm is sensitive to detect motion from vehicles or people. Under ideal conditions, the wireless range from the detector to the receiver is up to 1500ft/450m(actual range will vary depending on the local terrain). And the sensors' detection range is up to 20-40 feet..
[Fully Expandable System]: The receiver hub has 4 zones, and each zone can pair 2 motion senors. More importantly, these 4 zones have different tunes, through the tunes, you can know which area's sensor is triggered. You can add multiple sets of receivers and sensors to form a home alarm system to better protect your family and property..
[Easy to Install]: Our motion detector is beautiful, compact and portable. Small size, great function. Of course, it is very easy to install..
[Proven Quality]: Our motion sensor alarm can provide security for your family and property. And if you have any question about our product, please feel free to contact....
Metal Detector for Adults, High Accuracy Professional Adjustable Waterproof, 5 Detection Modes, 8\ Lightweight Upgrade Metal Detector for Treasure Hunting
...90 is the NGTeco self-developed compact-size handheld metal detector featured with a detection indicator right in the middle of its main body detecting the sizes of detected objects and visualizing in a different color (Green to Red). The professional alarm strength indicator will be according to the metal size and distance that displays the alarm levels..
WIDELY APPLICATION - Designed for a safety check and detection of prohibited goods, electronic products, metal objects in a railway station, frontier defense, school, court and factory, airport, and border security. With professional engineers and a dedicated support team, we will provide 365 days of free technical support. Please feel free to contact us through US-Based Phone support: (770) 800-2321..
BetterLink Wireless Solar Driveway Alarm Sound Light Alarm IP65 Weatherproof 1/2 Mile Outdoor Motion Detector 120 dB Siren Sound Alert, Flash Warning Security Alarm System for Farm and Home
...veway alarm system is powered by solar. Easy to install. One receiver can expand with up to 16 motion sensors for a full coverage of your property. The outdoor motion detector can be mounted to walls, fence posts, trees, or any other surface, providing 24hours motion detector and home safety..
Flexible Work and Long Distance Wireless：The wireless motion sensor can work with the receiver and also can work independently. Communication range up to 1/2mile (1500feet) from each sensor to the receiver. You can also use this motion detector as your long-range doorbell. Motion detection range from 0 feet to 30 feet..
Wide Range of Uses：The wireless solar driveway alarm system includes a receiver and a motion detector with waterproof grade of IP65 for indoor alarm and outdoor alert use. The waterproof motion sensors in the system use the pyroelectric infrared (PIR) technology to detect the heat source of moving object, so you can quickly receive motion alarms when people, cars and animals into your driveways, front porches, gates, yard, sheds, Barn, walkways and even during hunting..
Solar Powered：The solar driveway alarm sensor is powered by battery will be charged by the solar panel, so no need replace the battery, the sensor also can be charged pow....
Smart Motion Sensor, WiFi Wireless Security Alarm,110dB Sound and Light Alarm, Free App Alerts, Home Security PIR Motion Detector with 4 Alarm Modes, Compatible with Alexa, Siri
...ISARMING and view the alarm records through the Tuya App any time anywhere. The alarm can protect your property well and is your first home security system..
DUAL INFRARED DETECTION & ACCURATE ALARM: Our Tuya motion detector consists of upper and lower detection windows, 110° detection angle, 40 feet detection distance,support 360 degrees to adjust the detection orientation. Because of the dual infrared design, it can prevent people from climbing over the induction blind area without triggering the alarm and prevent false alarms from pets under 25KG..
COMPATIBLE WITH ALEXA GOOGLE & SMART LINKAGE: Pir motion sensor can be used with Amazon Alexa, Google home, Siri for home automation. It can also be linked with other smart wifi devices. for example, when you open the door, the sensor will be triggered and the light will turn on automatically..
THE NEW UPGRADE USB WIFI DETECTOR: Because smart motion sensor is a wifi 24 hours online products, the power consumption will be much higher than other sensor products, So we design it powered by USB cable, No need battery, just plugged in with USB cable all the time. Saves your money and saves the trouble of replacing the battery. We provide 24 months warranty on home security alarm..
Express Water RODI10D Reverse Osmosis Deionization Water Filtration System – 6 Stage RO Water Filter with Faucet and Tank – Under Sink Water Filter – with Deionization Water Filter – 100 GPD
Reverse Osmosis Water Filter: Experience what water should taste like with the Express Water reverse osmosis water filtration system filtering up to....
Deionization Water Filter: Made with ion exchange resin beads, Express Water deionization filters the most difficult of impurities from your water,....
Under Sink Water Filter: Don’t waste money on professional installation. Express Water’s quick and easy-to-understand design means you can install....
Under Sink Water Filter System: No need to mess with refilling or activating your water filter, Express Water’s water filtration systems....
Leak Detection: Each under sink water filter includes an emergency leak stop detector that shuts off water flow when it detects unwelcomed moisture.
The Minelab Equinox 600 800 Metal Detector Hand book by Andy Sabisch
❤ 【Ultra High Stability and High Sensitivity】:360°side-scan and Pinpoint tip detection. it can work indoors, outdoors, on sand, lawn or in soil, locate coin, silver, jewelry ,key and gold with speed and accuracy..
❤【With LCD Display】:You can display electric quantity, three alarm modes can be switched freely (vibration (silent), buzzing, vibration + buzzing), signal strength, etc., the waterproof position is below the display screen, the above display screen can not be immersed in water..
❤【Simple one-Button Operation】:Press the switch button on the metal detector to quickly start work, the closer to the metal target, the stronger the signal displayed on the display screen, the effective detection distance is about 10 cm..
❤ 【Small Size and Easy to Carry】:Lightweight portable ,24 cm long ,one-hand hold and you do not need to adjust,Equipped with leather holster and wire rope, it is easy to hang on belt or bag,Need a 9V alkaline battery(not Include)..
❤【 Excellent Gift】: Perfect seniors Christmas, birthday and memory days' gfits，it includes ：1* Metal Detector Pinpointer +1* Holster +1* Hanging Wire+1* English User Manual..
New 4 Parking Sensors LED Display Car Reverse Backup Radar System
► 4 ULTRASONIC SENSORS - The Zone Tech car reverse radar system is equipped with 4 sensor system installed at the rear bumper of car, double CPU and advanced chipset for enhanced coverage and detection..
► LED DISPLAY - The Zone Tech car reverse radar system is equipped with colored LED digital display, composed with 3 colors.
green, yellow and red, which shows the distance between the car and obstacle..
► INCREASES SAFETY - The Zone Tech car reverse radar system helps to provide increased safety for passengers, pedestrians and family members who happen to be around the moving vehicle. The radar system can detect small children and low walls as well..
► PREMIUM QUALITY - The Zone Tech car reverse radar system is made from premium quality materials to ensure durability and longevity. The radar sytem is designed with protective circuits and high quality components to prevent the product from overheating or overloading..
► WEATHERPROOF - The Zone Tech car reverse radar system has an adaptive environment technology. This helps protect the radar system from freezing and is solid weather proof..
MP5 Car Player AMprime 1 Din Car Radio 4.1 Inch Touch Screen Music Player Car Stereo Bluetooth Dual USB AUX SD + Backup Camera
【Single Din MP5 Car Player】Head unit size is 188*58*65mm, singel din car player 4.1" resistance touch screen, ultra clear and sensitive. Volume knob designed. Dual USB, one for media playing, one for fast phone charging. With AUX-in, RCA-out, SD port..
【 Built - in Bluetooth】With built-in microphone, support hands free phone calls, phone book/record download and phone book/record download and music playback..
【FM Radio Receiver】Frequency 87.5~108MHz. 18 stations can be preset. FM1 FM2 FM3 three high-quality radio effects. Lossless music EQ sound: Support MP3/WMA/WAV/APE/FLAC and other music formats , support Pop/Rock/Classical/Flat four sound effects..
【Rear View Camera Input Function】Included a waterproof mini backup camera, with 12 IR light for great night vision. When you pull the reverse gear, the car video player will display rear view image automatically, offering parking assistance..
【Remote control】8 Meters ultra long distance remote control, convenient to remote the machine on back seat. (Battery is not included).
Wired Passive Infrared Motion Sensor, 12V Dual PIR Motion Detector, Home Security Warning Alarm System, Low Noise and High Sensitivity
NOTE: Need to cooperate with the host. Through the infrared detection technology, after sensing the thieves in the front of the three-dimensional space, send an alarm signal to the alarm host, the host sent a high-decibel alarm to frighten the thieves immediately, and secretly notify the user through text messages or calls..
Wide detection range. use dual rectangular infrared technology, the sensing angle can reach about 110 degrees, and the sensing distance can reach 2-12 meters..
Anti-electromagnetic interference. The detector has good anti-electromagnetic interference performance, and the general mobile phone signal will not cause false alarms..
Exquisite appearance design with high stealthiness. Health product, low consumption, without any kind of radiation..
Wide range of applications. Wired motion detector is applied to detect objects with temperature, mainly for window, bedroom, living room, etc. Protect your home property security..
