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Best Battery operated Sensors

EEZTire-TPMS Real Time/24x7 Tire Pressure Monitoring System (TPMS4) - 4 Anti-Theft Sensors, incl. 3-Year Warranty

  • ...is motion sensitive and monitors tire pressure and temperature on 6-second intervals continuously. It sends visual and audio warning alarms immediately when tire pressure or temperature falls outside the preset safety parameters. The monitor goes into power saving mode if no motion is detected in 15 minutes to save battery. The sensors send status signals to the monitor on 6-second intervals continuously as long as the sensors are under pressure, so your tires are monitored 24 x 7..
  • EASY OPERATION & MAINTENANCE - EezTire TPMS monitor has one of the largest display screen on the market 4 ½” x 3”. It takes minutes to setup and program. The monitor has a built-in rechargeable internal lithium battery that lasts up to 60 hours on a charge. Sensors have replaceable batteries. It comes with a common USB charging cord that can be connected to vehicle’s cigarette lighter or USB port..
  • MULTIPURPOSE - TPMS monitor has separate controls for RV and trailer sensors which allows owner to turn off trailer control when driving RV only. The monitor can be programmed with anti-theft sensors or flow-through sensors or different combinations of both sensors to meet the needs of different tires. A booster can be added to boost signal and overcome distance and electr....
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EEZ RV Products EEZTire-TPMS Pro (518C) Tire Pressure and Temperature Monitoring System. 3.5' Color Display + 4 at Sensors. 3 Year Warranty. Not Compatible with Our Previous Models 515, E518, E618.

  • ...ransmission of pressure and temperature information from sensors for monitoring..
  • Advanced Technology Alert System - The monitor is motion-sensitive and continuously monitors tire pressure and temperature at 6-second intervals. If no motion is detected for 15 minutes, the monitor will enter power saving mode to save battery power. Configurable high temperature alarm settings. Visual and audible alerts..
  • MULTI-PURPOSE - The TPMS monitor has separate controls for the RV and trailer sensors, allowing the owner to turn off trailer controls only while driving the RV. A basic TPMS system starts with 4 sensors (TPMS4) and can have up to 26 sensors (TPMS26).
  • Easy to operate and maintain - EEZ RV Products' TPMS systems are rated by our customers as one of the easiest and most reliable TPMS systems to install and operate on the market. Setup and programming take a few minutes. The monitor has a built-in rechargeable internal lithium battery that lasts up to 60 hours on a single charge. The sensor has a replaceable battery. It comes with a universal USB charging cable that can be connected to the vehicle's cigarette lighter or USB port..
  • 3-YEAR LIMITED PRODUCT WARRANTY - EEZ RV Products offers a 3-year limited product warranty for all of our TPMS systems. We also p....
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Water Alarm & Sensor 2 Pack eOUTIL 95 DB Water Leak Detector - Wireless Leak Alert and Flooding Alarm for Home Security Kitchen Bathroom Basement and More

  • Automatic Operation - The water leakage alarm devices are exquisitely designed, fully automatic operation, no wiring required.once triggered, simply....
  • Low Battery Indication Design - The water leak alerts will sound a loud alarm and activate the LED light when the battery gets low, removable design....
  • Flexible Placed and Space Saving - The home water leak sensors are wireless and palm size. Suitable for anywhere there is a potential for leaks-near....
  • Packing - The package contains 2 leak detector units and a detailed instruction manual - 9v batteries are not included..
  • Money Back Guarantee - If you are not 100% satisfied with our water sensors, we offer you a 30 day full money back guarantee. So don't worry, buy it....
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ORIA Indoor Outdoor Thermometer with 3 Wireless Sensors, Digital Hygrometer Thermometer, Temperature Humidity Monitor Meter with LCD Backlight, Wireless Thermometer for Home, Office, Bedroom, White

  • ... simple and clear readings. Indoor temperature (0 - 60℃).
  • Humidity (10% - 99%). The temperature and humidity accuracy: ± 1℃ / ± 5%.
  • DRY: humidity﹤45%. The express changes following the changing of the humidity..
  • 【Backlight & Battery Life】 You can press the "Light" button to turn on the backlight. It will automatically turn off after 5 second if without any operation. This help you to read the data clearly even though at night. Minimum 12 months for base station with one sensor..
  • 【Max & Min Record】 Max & Min functions on indoor and outdoor on both temperature and humidity. The data update every 60 seconds. Press the ℃/°F button to switch between celsius and fahrenheit. Perfect on your house, office, factory, etc. Time & Alarm Clock, Calendar, Snooze / Light..
  • 【Easy to Operate】 The station and transmitter signal distance: 100M/328ft. It can be stand in the desk or hang on the wall as you like. The station need 3* AAA Battery.
  • Sensor need 2*AAA Battery.(not included). When the sensor shows the low battery icon, that means you need to change the new battery in the sensor. If there are any problems with the product, or if the product is defective/damaged....
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Serene Innovations Centralalert Notification System Ca360h Vibrating Alarm Clock/receiver with Hanging Door Knock Sensor for Deaf or Hearing Loss Impaired Disabled

  • CA360 Vibrating Clock Receiver Features: An unlimited number of CentralAlert CA360 system can be used in close proximity, such as in apartment buildings or hotels Alerts to alarm clock, doorbell, door knocks, phone/fax, audio alarm, baby, weather, motion and more (sold separately).
  • Supports up to 4 CA-DB doorbells and CA-DX door knock sensors (in any combination) Supports up to 10 CA-RX remote receivers, 10 CA-PX personal pagers, 10 CA-AX audio sensors, 4 CA-SOS emergency SOS pendants, 3 CA-BX baby cry sensors, 1 CA-CX phone sensor and 1 CA-NOAA weather alert sensor Alarm clock has adjustable brightness display, dual alarm settings and dual bed shaker jacks (one bed shaker included).
  • 1.25" bright clock display Adjustable loud audio sound and bright flasher Big and easy to see alerting icons 2.4GHz frequency.
  • Uses 520Hz square-wave technology for maximum audio alert, found to be more effective in alerting people with hearing loss Up to 200 ft operating range Dimensions: 6.5" x 4.5" x 2.25" Battery backup 4 AA NiMH (batteries not included).
  • CA-DXH Door Knock Sensor Features: 2.4GHz operating frequency Up to 210 ft operating range Uses 2 AA alkaline batteries (not included) Dimensions: 2.5" x 3.8" x 1" * Accessories sold separately..
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LiftMaster 878MAX Security+ Garage Door Keypad Wireless and Keyless Entry System for Easy Entry

  • Wireless Design: No need for additional wiring as this keyless entry system is completely wireless.
  • Easy to Use: Temporary password option and one-button-to-close feature makes it convenient to use.
  • Battery-Operated: Wireless and keyless garage door keypad operates and comes with a 9-volt battery.
  • Wall-Mounted: Can be mounted conveniently outside your garage door so you can open or close it.
  • Compatibility: It works with any LiftMaster door opener with safety sensors from 1993 to the present.
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Amazon Basics Lithium Batteries CR2-4 3V 4pk & Alkaline AAA Batteries ALK AAA36FFP-U AMZ 1.5V 36pk Single Use

  • Low self-discharge rate (less than 1% per year at 25ºC).
  • Applications:motion sensors ,smoke alarms,alarm system,range finders,timer switch,flashlight,light meters,laser sights,shock collar,tactical light,security system,camera..
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Dakota Alert DCMT-4000 Passive Infrared Motion Detector Transmitter - One Mile Wireless Range Wireless Driveway Alarm Sensor for Home Security Backyard Monitor Entry Alert Wireless Doorbell.

  • One Mile Wireless Range- The DCMT-4000 can send a signal up to one mile when it detects a person or vehicle. Maximum detection range is up to 100'....
  • Easy installation- Up to 16 sensors can be paired with one receiver or an unlimited number of receivers can be paired to one sensor. Simple....
  • Longest wireless range in its class- One mile wireless range is much greater than other products that claim ¼ mile or ½ mile. The long range means....
  • Ultra Reliable Battery Operation- The DCMT-4000 is powered by one 9 volt akaline battery (not included). Typical battery life will be a year or more.....
  • The DCMT-4000 is compatible with any of the Dakota Alert 4000 Series sensors or receivers. Mix and match to make the ideal system for your needs..
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Tekonsha ZCI™ Zero Contact Interface Universal ModuLite® & Installation Kit

  • Activates a trailer's stop/turn/tail/running lights without cutting or splicing into your vehicles wiring system - simply snap on included current sensors.
  • Use when: trailer has more than 1 light assembly per side and is equipped with multiple clearance or running lights.
  • if tow vehicle may tow a variety of trailers.
  • Re-settable short circuit/overload protection - guards itself and the tow vehicle from shorts and wiring install mishaps.
  • rated at 4.2 amps for turn/stop circuits, 7.5 amps for taillight circuit.
  • Works on all vehicle types including standard, PWM and/or multiplex systems, ensuring full brightness of the trailer lights during operation.
  • ZCI sensor technology and direct connection to the tow vehicle battery, eliminates all electrical connection and interference with the tow vehicle electrical system.
  • Isolates trailer light operation from tow vehicle's electrical system.
  • 5 amps for taillight trailer circuits. Works with low side Switched vehicles.
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Smart Wireless Temperature / Humidity Sensor Wide Range (-22 to 158 degrees) for Freezer Fridge Monitoring Pet Cage/Tank Monitoring Smartphone Alerts, Works with Alexa IFTTT, 2 Pack - 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 notification preferences, test your new sensors, then enjoy years of trouble-free operation!.
  • KNOW NOW! You have many options for being notified of device act....
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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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X-Sense 10-Year Battery Smoke and Carbon Monoxide Detector with LCD Display, Dual Sensor Smoke and CO Alarm Complies with UL 217 & UL 2034 Standards, Auto-Check, SC08, 5-Pack

  • ...ects against both dangerous smoke and carbon monoxide (CO) in the surrounding air.
  • accurately detects CO from any potential sources.
  • upgraded photoelectric and electrochemical sensors significantly increase the alarm’s sensitivity, enabling faster response times.
  • 10-Year Battery-Operated Smoke & CO Alarm: A sealed lithium battery enables the unit to monitor your home 24/7, keeping you and your family safe and sound for up to a decade without frequent battery replacement.
  • a low battery warning indicates the unit is coming to its end of life.
  • Practical LCD Display: Clearly displays real-time CO levels above 30 ppm (parts per million) taken from the surrounding air, as well as the status of the alarm’s battery level.
  • Faster Response to Dangers with Loud 85 dB Alarm: Gives you the earliest possible warning of smoke and CO threat with both a loud 85 dB alarm and a rapid flashing red LED indicator.
  • this alarm is sure to wake up you and your family, even when sound asleep.
  • Simple Installation & Operation: Battery-operated unit installs quickly and easily without an electr....
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Ski Classics Review Music

  • Multiple Boats Race at the Same Time: The 2.4Ghz remote with 4-Channels allows several toy boats to play together. The motorized pool float can go forward and backward, turn left and right with a signal range of 160 feet..
  • Low Battery Warning: When the pool boat's power is low, the boat's light flash and it will stop running for 5 seconds to remind you to return. Such reminders appear several times until you bring the RC boat for pool back to shore..
  • Safe Protection: There are 2 water sensitive sensors on the radio controlled boat. These sensors ensure the boat will only start working if it is put in the water and prevents the child's fingers from touching the moving propellers..
  • Easy Operation for Beginner: This kids boat features easy directional controls, a watertight body, and a high capacity battery that allows uninterrupted water play fun of up to 20 minutes for every 90-minute charge. It is a great Christmas gift for boys and girls..
  • Waterproof Pool Toys for Kids: The RC boat for pool is equipped with a waterproof cover to stop any water come inside. Running the remote boat in clean water like lakes, pools and rivers is strongly recommended. This remote control jet ski is NOT for saltwater.
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