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Best Contact Sensors

Raynon WiFi Home Security System Base Kit, Alarm, Door Sensor, PIR Sensor, Remote Control

  • Easy Setup. No Monthly Fee. Home & Office Security Alarm System..
  • Raynon Home Security System Base Kit Include: One Base Hub (function as alarm), Two Contact Sensors, One PIR Sensor, and Two Remote Controls. Additional Sensors Available, 24 Max Sensors Supported.
  • Please Search for “Raynon” On Android Devices, or “Tuya Smart” On IOS Devices For Free App Associated With Our System.
  • 2.4 GHz Wifi Network Required. Our system currently do not support 5GHz Wifi Network.
  • Please Send Tech Support Questions To: [email protected].
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Ring Alarm 8-piece kit 2nd Gen with Ring Indoor Cam

  • This bundle includes Ring Alarm 8-piece kit (2nd Gen) and Ring Indoor Cam..
  • A great fit for 1-2 bedroom homes, this kit includes one base station, one keypad, four contact sensors, one motion detector, and one range extender..
  • Put whole-home security at your fingertips with Ring Alarm, a do-it-yourself alarm system..
  • Includes a more intuitive keypad with emergency buttons and smaller contact sensors to seamlessly blend into your home..
  • Receive mobile notifications when your system is triggered, change your Alarm modes, and monitor all your Ring devices all through the Ring app..
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Ring Alarm 8-piece kit (2nd Gen) – home security system with optional 24/7 professional monitoring – Works with Alexa

  • A great fit for 1-2 bedroom homes, this kit includes one base station, one keypad, four contact sensors, one motion detector, and one range extender..
  • Put whole-home security at your fingertips with Ring Alarm, a do-it-yourself alarm system..
  • Includes a more intuitive keypad with emergency buttons and smaller contact sensors to seamlessly blend into your home..
  • Receive mobile notifications when your system is triggered, change your Alarm modes, and monitor all your Ring devices all through the Ring app..
  • Choose the Ring Alarm kit that fits your needs and add additional components and accessories at any time..
  • Easily setup your Ring Alarm by plugging in your base station, connecting to wifi via the Ring app, and placing your sensors in their ideal locations..
  • Better with Alexa: Arm and disarm Ring Alarm with your voice and get mobile alerts about the sound of broken glass or smoke alarms with Alexa Guard. Call trained agents from your Echo who can request the dispatch of emergency responders with Alexa Guard Plus, included with an eligible Ring Protect plan..
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Ring Alarm 14-piece kit (2nd Gen) – home security system with optional 24/7 professional monitoring – Works with Alexa

  • A great fit for 2-4 bedroom homes, this kit includes one base station, two keypads, eight contact sensors, two motion detectors, and one range extender..
  • Put whole-home security at your fingertips with Ring Alarm, a do-it-yourself alarm system..
  • Includes a more intuitive keypad with emergency buttons and smaller contact sensors to seamlessly blend into your home..
  • Receive mobile notifications when your system is triggered, change your Alarm modes, and monitor all your Ring devices all through the Ring app..
  • Choose the Ring Alarm kit that fits your needs and add additional components and accessories at any time..
  • Easily setup your Ring Alarm by plugging in your base station, connecting to wifi via the Ring app, and placing your sensors in their ideal locations..
  • Better with Alexa: Arm and disarm Ring Alarm with your voice and get mobile alerts about the sound of broken glass or smoke alarms with Alexa Guard. Call trained agents from your Echo who can request the dispatch of emergency responders with Alexa Guard Plus, included with an eligible Ring Protect plan..
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REXQualis Complete Starter Kit Compatible with Arduino IDE and Electronics Component Fun Kit

  • REXQualis complete starter kit base on Arduino UNO R3 comes with more than 200pcs components, 67 kinds of components and sensors module..
  • Include High Quality Base Board base on Arduino UNO R3 and Sensors, 100% compatible with Arduino IDE..
  • LCD1602 Module，MPU-6050 Module and RC522 RFID Module come with pin header, Motors come with wires, not need to solder by yourself..
  • REXQualis Electronics Component Fun Kit is a Highest Cost Components Kit, It comes with more than 400pcs sensors and components for fun and simple electronic projects..
  • Datasheet and Tutorial are available to download from our official website or you can contact our customer service..
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Amcrest Home Security System, DIY Smart Home Alarm System for Home with No Monthly Fees, Remote Arm/Disarm & Phone App Alerts, 4 Pieces-Kit (PIR Motion Sensor, Door Window Sensor, Alarm Hub)

  • Wireless Security System - A smart way to protect your house with the Amcrest SmartHome Security System. This 4-piece kit includes the 1 PIR Motion Sensor, 2 Windows & Door sensors, and 1 Alarm Hub..
  • Smart Alarm System - Amcrest SmartHome Alarm Security System is an affordable solution for your home/business security. You have full control over the window/door alarms for home security through the smartphone SmartHome App and get instant notifications of alarm alerts in your house or business..
  • Customizable - You can add extra door and window sensors, PIR motion detectors to different rooms in your home/business security systems.
  • It supports the expansion of up to 32 door/window sensors and PIR Motions Sensors, which can be added to the WiFi alarm station..
  • DIY Installation - Easily set up the Amcrest SmartHome Alarm Kit Wireless Home Security System in minutes without tools. The wireless connection devices don't damage the wall. The alarm station should always connect via the USB cable to the AC adapter..
  • Simple, Reliable, Secure - You’ll receive a full 1-year US Warranty and Lifetime Support provided directly from Amcrest. Additional PIR Sensors (ASIN: B08X1KYYQ7) & Contact Sensors (ASIN: B08X4XZNW9)can be purchased separately..
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Set of 4 Oxygen O2 Sensor Upstream & Downstream Compatible with 2004-2007 Dodge Ram 1500 Magnum Charger Commander Liberty Chrysler 300 Mitsubishi - Replaces 56028994AA 56028994AB 05149170AA OS5249

  • Description -- Oxygen sensor, O2 sensor, upper oxygen sensor, sensor-oxygen. The 2 upstream sensors are the same as the 2 downstream sensors. Commonly....
  • OE & Replace Part -- for Mopar: 56028994AA, 56028994AB, 5149170AA, replace 56044627AA, 56044652AA, 05149170AA.
  • Compatible with Jeep Mitsubishi Chrysler Dodge -- for 2005 2006 2007 300 Oxygen O2 Sensor, 2006 Mitsubishi Raider Oxygen O2 Sensor, 2006 Commander....
  • Yikesai OEM Design - While these are not genuine OEM oxygen sensors, it is a direct replacement for the factory O2 sensors. commonly found on charger....
  • What you'll get - 24 months' warranty. Save hundreds of $$ from Yikesai. If the O2 sensor ever fails, please contact us for a replacement..
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16 in 1 Project Super Starter Kits Sensor Modules Kit for Arduino Raspberry for UNO R3 Mega2560 Mega328 Nano Raspberry Pi 3 2 Model B K62 (16 in 1)

  • THE MOST COMPLETE SMART HOME KIT--This universal kit are compatible for Arduino UNO R3 / Mega2560 / Mega328 /Nano / Raspberry Pi, it could DIY 16 projects according to your need..
  • Those sensors will often being used in the beginner's project. It is included sound and obstacle avoidance sensor, obstacle avoidance sensor, temperature and humidity sensor, ultrasonic, a path tracing module and infrared human body induction sensor..
  • This has 16 sensors modules and delicately selected sensors to detect temperature, humidity, sound, light, infrared, motion, flame, vibration, digital touch, air pressure and many other commonly-used sensors modules..
  • We eliminate many old-fashioned sensors which have low reliability and duplicate function as other sensor in the kit, the UMLIFE modules sensor kits are choosed carefully for our user..
  • With this kit, we will take you from knowing to utilizing, you are able to do more experiment, get your more idea into real action without the restriction of hardware and software. ❃❃ Any questions, you can contact us and we will give you a satisfied solution..
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SimpliSafe 8 Piece Wireless Home Security System - Optional 24/7 Professional Monitoring - No Contract - Compatible with Alexa and Google Assistant , White

  • A great fit for 1-2 bedroom homes, this kit includes one base station, one keypad, four contact sensors, one motion detector, and one range extender..
  • Put whole-home security at your fingertips with Ring Alarm, a do-it-yourself alarm system..
  • Includes a more intuitive keypad with emergency buttons and smaller contact sensors to seamlessly blend into your home..
  • Receive mobile notifications when your system is triggered, change your Alarm modes, and monitor all your Ring devices all through the Ring app..
  • Choose the Ring Alarm kit that fits your needs and add additional components and accessories at any time..
  • Easily setup your Ring Alarm by plugging in your base station, connecting to wifi via the Ring app, and placing your sensors in their ideal locations..
  • Better with Alexa: Arm and disarm Ring Alarm with your voice and get mobile alerts about the sound of broken glass or smoke alarms with Alexa Guard. Call trained agents from your Echo who can request the dispatch of emergency responders with Alexa Guard Plus, included with an eligible Ring Protect plan..
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Diamond Rings Are Deadly Things (Wedding Planner Mysteries Book 1)

  • A great fit for 2-4 bedroom homes, this kit includes one base station, two keypads, eight contact sensors, two motion detectors, and one range extender..
  • Includes a more intuitive keypad with emergency buttons and smaller contact sensors to seamlessly blend into your home..
  • Choose the Ring Alarm kit that fits your needs and add additional components and accessories at any time..
  • With a Ring Protect subscription (sold separately), receive mobile notifications when your system is triggered, change your Alarm modes, and monitor all your Ring devices all through the Ring app..
  • Additional protection – With a Ring Protect Pro plan (subscription sold separately), get professional monitoring with 24/7 emergency police, fire and medical response, alarm cellular backup and more for $20/month..
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Precision Screwdriver Set, Computer Repair Tool Kit, 146 PCS Laptop Screwdriver Kit with 123 Bits, Magnetic Mat, Magnetizer, for iPhone, MacBook, PC, Tablet, PS5, Xbox, Switch, Game Console

  • A great fit for 2-4 bedroom homes, this Alarm Kit includes one Base Station, two Keypads, eight Contact Sensors, two Motion Setectors, and one Range Extender..
  • Includes an intuitive Keypad that can arm and disarm your Alarm and Contact Sensors that detect when doors or windows open..
  • Choose the Ring Alarm Kit that fits your needs and detect even more with additional Alarm Sensors and accessories (sold separately) at any time..
  • With a Ring Protect Plan (subscription required, sold separately), receive mobile notifications when your system is triggered, change your Alarm modes, and monitor all your Ring devices allthrough the Ring app..
  • Level-up your protection. Get 24/7 emergency police, fire and medical response with optional Alarm Professional Monitoring, keep your Ring Alarm online during a power outage, and more, for $20/month with a Ring Protect Pro Plan (subscription required, sold separately)..
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The 9.9 Percent The New Aristocracy That Is Entrenching Inequality and Warping Our Culture

  • A great fit for 2-4 bedroom homes, this kit includes one base station, two keypads, eight contact sensors, two motion detectors, and one range....
  • Put whole-home security at your fingertips with Ring Alarm, a do-it-yourself alarm system..
  • Includes a more intuitive keypad with emergency buttons and smaller contact sensors to seamlessly blend into your home..
  • Receive mobile notifications when your system is triggered, change your Alarm modes, and monitor all your Ring devices all through the Ring app..
  • Choose the Ring Alarm kit that fits your needs and add additional components and accessories at any time..
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Ring Alarm 8-Piece Kit (2nd Gen) with Ring Video Doorbell (2020 Release) and Echo Show 5 (2nd Gen)

  • This bundle contains Ring Alarm 8-piece kit (2nd Gen), Ring Video Doorbell (2020 release), and Echo Show 5 (2nd Gen)..
  • A great fit for 1-2 bedroom homes, this kit includes one base station, one keypad, four contact sensors, one motion detector, and one range extender..
  • Put whole-home security at your fingertips with Ring Alarm, a do-it-yourself alarm system..
  • Includes a more intuitive keypad with emergency buttons and smaller contact sensors to seamlessly blend into your home..
  • Receive mobile notifications when your system is triggered, change your Alarm modes, and monitor all your Ring devices all through the Ring app..
  • Choose the Ring Alarm kit that fits your needs and add additional components and accessories at any time..
  • Easily setup your Ring Alarm by plugging in your base station, connecting to wifi via the Ring app, and placing your sensors in their ideal locations..
  • Better with Alexa: Arm and disarm Ring Alarm with your voice and get mobile alerts about the sound of broken glass or smoke alarms with Alexa Guard. Call trained agents from your Echo who can request the dispatch of emergency responders with Alexa Guard Plus, included with an eligible Ring Protect plan..
Check Stock