ReviewsBattery powered Sensors

Chickcozy Automatic Chicken Coop Door Opener with Timer, Programmable Light Sensor, Battery Powered LCD Screen, Weatherproof, Low Battery Alert (Orange)

  • ... detects some pressure, the chicken coop door will immediately stop closing to avoid hurting the chicken, the door will open again to allow the chicken to move. The door will then automatically try to close again until there are no feathery obstructions in the way and your chickens are all safe inside the coop..
  • Low Battery Alert - When you use batteries to power the automatic chicken door, you can always wake up the screen to check the remaining capacity of the current battery set. When the power is low, the screen will remind you to replace the battery in time by flashing when you wake it up. (The door will still work when the power is 0%, but the speed of opening and closing will be slower, we recommend that you replace the battery when the power is below 20%.).
  • Super easy to set up in just 1 minute - A complicated setup is always a headache.
  • the wrong setting or missing setting may cause unnecessary loss due to the wrong setup. Chickcozy's automatic chicken coop door is design for all ages, and you can quickly finish the setup in 1 minute.
  • The Screen Shows Everything - You can always know the auto door settings (current mode, open/close conditions) and the battery level by checking the screen. You don't need to conjecture....
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Chickcozy Automatic Chicken Coop Door Opener with Timer, Programmable Light Sensor, Battery Powered LCD Screen, Weatherproof, Low Battery Alert (Green)

  • ... detects some pressure, the chicken coop door will immediately stop closing to avoid hurting the chicken, the door will open again to allow the chicken to move. The door will then automatically try to close again until there are no feathery obstructions in the way and your chickens are all safe inside the coop..
  • Low Battery Alert - When you use batteries to power the automatic chicken door, you can always wake up the screen to check the remaining capacity of the current battery set. When the power is low, the screen will remind you to replace the battery in time by flashing when you wake it up. (The door will still work when the power is 0%, but the speed of opening and closing will be slower, we recommend that you replace the battery when the power is below 20%.).
  • Super easy to set up in just 1 minute - A complicated setup is always a headache.
  • the wrong setting or missing setting may cause unnecessary loss due to the wrong setup. Chickcozy's automatic chicken coop door is design for all ages, and you can quickly finish the setup in 1 minute.
  • The Screen Shows Everything - You can always know the auto door settings (current mode, open/close conditions) and the battery level by checking the screen. You don't need to conjecture....
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Fuers 110db Loud Standalone Indoor Strobe Flashing Siren Door and Window Spot Alarm System DIY Kit, Wireless Home Security Burglar Alarm System,Keyfob Remotes and Motion Detector

  • Trustable System - Strobe Flashing Siren is responsible for communication with all sensors and decide when will alarm.Door/Window sensors detect any forceful break-in,motion sensors detect any suspicious movement or activity in your home,remote key fob is for quickly arm, disarm, stay arm or SOS call your security alarm system..
  • Operate easily - No Need GSM SIM Card & WIFI Network,No Need App.it will help you avoid the trouble in setting the alarm system with gsm or pstn,wifi and the complex setting,when it is triggered,it will alarm onsite and strobe flashes..
  • Plug and play - The Standalone Alarm System is built-in Ni-Hi rechargeable battery 3.7V/600mAh,Standby over 8 hours in case of a power failure..
  • Expanded & DIY - Support expansion of up to 50pcs sensors and 30pcs remote tags for different size houses as you need,The wireless motion sensor alarm system comes with fully programmable the siren host and sensors,after you get the items,please remove insulating sheet inside sensors first,then just connect with Power supply and directly use the item..
  • Volume is adjustable -This home office alarm security system is loud 110db with 8 different volume levels, including silent mode where only the strobe flashes,so you can install it in baby room..
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KeeKit Refrigerator Thermometer Wireless Indoor Outdoor Thermometer with 2 Sensors Digital Fridge Thermometer with Audible Alarm Temperature Gauge for Freezer Restaurants Bars

  • 【2 Wireless Sensors】Built-in the console and 2 remote sensors, the wireless fridge thermometer can display indoor temperature and 2 groups of....
  • 【4.3 Inch Readable Display】This indoor outdoor thermometer with low battery alert, high definition LCD screen and large bold data to ensure....
  • 【Accurate Max/Min Record】This freezer thermometer can record max/min temperature and display up, down & parallel arrow to indicate the trend of....
  • 【Audio Alarm】The wireless refrigerator thermometer will make audio alarm to remind you and your family to know the temperature variation and make....
  • 【USB & Battery Powered】Main unit is powered by a USB cable (included) or batteries (not included). With integrated magnets, a hanging hole and a....
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Smart Wireless Temperature Sensor/Humidity Sensor Wide Range (-22 to 158 Degrees) for Freezer Fridge Monitoring Pet Cage/Tank Monitoring, Smartphone Alerts, Compatible with Alexa IFTTT - Hub Included

  • DON'T TRY THIS WITH WiFi! Our unique LoRa-based sensors are different from WiFi, Zigbee, Z-Wave and most other wireless smart sensors in that they are extreme long-range (up to 1/4 mile open-air), low-power (years between battery changes), and work outdoors*, on other floors, and even in a metal box (like a fridge or mailbox)!.
  • MONITOR & MANAGE your temperature and humidity concerns, whether it's a fridge or freezer, a barn or bedroom, a chicken coop or a dog kennel, a plant nursery or your child's nursery - anywhere! *Consider one of our weatherproof sensors, designed for outdoor use.
  • ECONOMICAL SMART FRIDGE! Save thousands when you make ANY fridge smart (or smarter) with YoLink smart sensors. Start with temperature sensors, then add door/lid sensors, leak sensors and a Power Fail Alarm..
  • PLUG, PLUG & PLAY! Take advantage of direct ethernet connection and be online almost instantly when you plug your Hub into your router or network switch. Or, use hot spot mode to connect to your WiFi network in moments. Add devices in seconds using our Scan & Play QR code scanner in the app! Set your notifi....
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4VWIN Wireless Home Security Driveway Alarm 1 Receiver and 1 PIR Motion Sensor Detector Infrared Alert System Kit

  • LONG RANGE CONNECTION - Motion Sensors can connect with Receivier from up to 350 feet away(in open space)!.
  • PASSIVE DETECTION - Passive Infared (PIR) Technology continuously monitors for motion up to 25 feet away from sensor for any intrusion.
  • ADJUSTABLE ALARM - Choose between high or low volume alerts and flash the LED warning lights. Privately be aware when sensors have notice guests arriving to your property or raise the volume to warn trespassers to go away.
  • AVOID FALSE ALARM -Do not place the detector in areas where the wind will active it, also try to keep the detective in a clear path to the receiver, so that you can get optimal performance.
  • LONG LASTING POWER - Alarm Base: 3x Size 'C' 1.5V Battery or 6V DC Power Adapter (Not Included).
  • Motion Sensor: 1x 9V Battery Each (Not Included)（For the best performance, please use fresh,high-quality, Alkaline batteries.）.
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CenRacing 8982 Ford F450 SD 1/10 4WD RTR (RED Candy Apple) Custom Truck DL-Series

  • After years of development, we now recommend users of our product as well as users of ALL other brands of TPMS units install a repeater. The FCC mandated radio frequency of 433.92 mhz is increasingly crowded with wireless devices. Our sensors use a coin battery that can be overpowered. A repeater uses 12 volt power that is 100 times more powerful and provides 99% full data coverage. Because safety is first, we believe our customers are well served taking the extra step of installing a repeater..
  • Please keep in mind that only 1% of customers post reviews. The reviews may or may not contain accurate information. We have many thousands of satisfied customers. Please feel free to contact us directly via Amazon messaging for guidance on the use of our product..
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Bosch BDL2-WP12G TriTech Motion Detector Pet Immune

  • ...been real-world tested in settings with trees, buildings, walls, and vehicles. It easily achieves a 1500FT wireless range in most conditions. It is been tested through thick forestry, hail storms, gusty winds, heavy rains, scorching heat, and snow..
  • SOLAR POWERED NO NEED REPLACE BATTERIES- The sensor is powered by a battery which will be charged by the solar panel, so no need replace the battery, the sensor also can be powered by the DC5V power adapter..
  • EXTREMELY RELIABLE - Much time went into developing and testing our reliable Infrared outdoor driveway alarm wireless detector that will dependably alert you to activity around your property. False alarms are minimized by adjusting the sensitivity of the sensor “eye” with Switch. (Hi = 30ft,Low = 20ft.) See Owner’s Instruction Manual. Swivel mount to refine the focus and detection angle of the sensor..
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Arccos Gen 3+ Smart Sensors - Golf's Best On Course Tracking System Featuring The First-Ever A.I. Powered GPS Rangefinder

  • The new GEN3+ system includes 14 sensors (one for every club in your bag), featuring: 13 new, ultra-light sensors with long lasting battery and power saving mode, AND 1 new P3 putter sensor featuring a new design that is more than 40% smaller and 20% lighter..
  • FREE one year membership to the award winning Arccos Caddie app..
  • Winner of four-straight Golf Digest Editor’s Choice Awards for “Best Game Analyzer,” Arccos Golf Smart Sensors is golf’s first and only fully-automatic performance tracking system..
  • Automatic shot tracking, hands-free fully automatic data capture..
  • A.I. Powered GPS Rangefinder, first-ever rangefinder that adjusts in real-time for wind (including gusts), elevation, temperature, humidity and altitude providing the most precise yardage in the game the Arccos Caddie Number..
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4VWIN driveway alarm provides a convenient and economic way to alert you the moment when someone is approaching your home

  • LONG RANGE CONNECTION - Motion Sensors can connect with Receivier from up to 350 feet away(in open space)!.
  • PASSIVE DETECTION - Passive Infared (PIR) Technology continuously monitors for motion up to 25 feet away from sensor for any intrusion.
  • ADJUSTABLE ALARM - Choose between high or low volume alerts and flash the LED warning lights. Privately be aware when sensors have notice guests arriving to your property or raise the volume to warn trespassers to go away.
  • AVOID FALSE ALARM - Do not place the detector in areas where the wind will active it, also try to keep the detective in a clear path to the receiver, so that you can get optimal performance..
  • LONG LASTING POWER - Alarm Base: 3x Size 'C' 1.5V Battery or 6V DC Power Adapter (Not Included).
  • Motion Sensor: 1x 9V Battery Each (Not Included)（For the best performance, please use fresh,high-quality, Alkaline batteries.）.
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Welding Helmet, Auto Darkening, 1-9/16in.H

  • Price For: Each Headgear: Ratchet Material: Nylon Item: Auto Darkening Welding Helmet Includes: Lithium Battery, Magnifying Lens Holder, (5) Outside, (2) Inside Cover Lenses Features: 1/15, 000 sec. Lens Speed, Sensitivity and Delay Control 0.10 to 1.0 sec., TIG Rating 5A, Auto-On/Auto-Off Power Control, Accessible Bottom-Mounted Control, (2) Modes (Weld Mode, X-Mode), Integrated Grind Shield Battery Type: Lithium.
  • Viewing Area: 5.8 sq. in. Plate Height: 1-9/16" Graphics: None Electromagnetic Sensor: No Standards: ANSI, CSA Switching Speed: 1/15, 000 sec. Battery Life: 2000 hr. EN379 Classification: 1, 1, 1, 2 Series: Classic ADF Controls: Knobs Power Source: Battery and Solar Number of Arc Sensors: 3 Grind Mode: Yes Lens Shade: 4, 9 to 13 Color: Black Plate Width: 3-3/4".
  • Country of Origin (subject to change): South Korea.
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