Reviews Sensor Networks

DollaTek SIMCOM SIM900 GSM GPRS Quad-Band Modules 2G Development Shield Board for R3 Mega with Antenna

  • Quad-Band 850/900/1800/1900 MHz - could work on GSM networks in all countries around the world, work with Uno Mega.
  • Embedded TCP / UDP stack - allows you to upload data to a Web server | RTC supported | selectable serial port | Jac speakers and headphones.
  • Note: This is a new version (64M version), SMS support MMS: Multimedia message and Short Message Service - so it is possible to send small amounts of data over the network (ASCII or raw hexadecimal).
  • The shield allows you to get SMS, MMS, GPRS and audio via UART by sending AT commands (GSM 07.07, 07.05 and SIMCOM enhanced to commands). The shield also has the 12 GPIOs, 2 PWMs and an ADC of the SIM900 module (They are all 2V8 logic) present on board..
  • Application: M2M (Machine 2 Machine) Applications.Remote control of appliances.Remote Weather Station or Wireless Sensor Network.Vehicle tracking system with a GPS module.Good to learn GSM / GPRS mobile phone development, control development of remote equipment, wireless meter reading, smart appliances, ultra long distance control, etc..
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The Hallow

  • 【4G LTE Network】Supports 5 network modes and 4G/3G/2G networks,global bands, Global travel, only one 4G smartwatch is enough. Enjoy faster data transmission, lower consumption and more reliable connection from now. Supports Network Frequency:2G GSM:B2,B3,B5,B8.
  • 4G FDD LTE:B1,B2,B3,B5,B7,B8,B12,B17,B20.
  • TDD LTE:B38,B39,B40.(NOTE:Works with AT&T,C Spire,Sprint,miSpot,Mosaic Telecom,nTelos,T-Mobile,US Cellular,United Wireless,V-tel,Adams Networks).
  • 【2.86" Big Screen Call Watch】 The Ticwris MAX smartwatch is equipped with a new generation of square LCD screens. With 2.86 inch display and full-screen resolution 480x640,match the latest HD 8.0MP camera, it can offer whether watching video,playing games or good selfies,it will bring you an unprecedented immersive visual experience..
  • 【Longer Battery Life】Give your charger a rest. The 2880 mAh battery eliminates the need for daily charging and helps you keep up with your busy week. （Standby time 11 day in 4G mode.
  • 【Watch Your Heart】 Equipped with a heart rate sensor and a built-in heart rate monitor, you can check yo....
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tolviviov Home Alarm System(2nd Gen), 12 Pieces Smart Home Alarm Security System DIY No Monthly Fee, Phone Alert, Alarm Siren, Door/Window Sensors, Remotes, Work with Alexa, for House Apartment Office

  • ...ndow with tolviviov wifi door sensor to stop burglar. tolviviov home security systems always give you peace of mind..
  • ✅VOICE CONTROL - Your tolviviov alarm system for apartment can be easily controlled by Away, Disarm, and Home modes with your voice. Works with Alexa and Google Assistant. Only works on 2.4GHz WiFi networks, does NOT support 5GHz WiFi networks..
  • ✅DIY INSTALLATION - The tolviviov Smart Alarm System makes installation much easier than any previous version so that you can enjoy tolviviov security alarm system within minutes. No professional is required. The wireless connection devices does not damage the wall. The alarm station should ALWAYS CONNECT to AC adapter. The backup battery works for 8 hours, only as an emergency battery..
  • ✅BUY with Confidence - The smart security system comes with a base station, 2 remotes, 9 contact sensors. tolviviov home alarm system can be used not only for your house or apartment, but also for offices, garage, shops, stores, condos. etc. No Monthly Fee. No Contacts..
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Bold N1 | 2020 | All Day Battery | Unlocked | 6.4” Full HD+ AMOLED All Screen Display | 128 GB | Dual 16MP Camera | US Version | US Warranty | Black

  • 6.4” Full HD+ AMOLED All Screen Display with Corning Gorilla Glass 5.
  • 13MP Selfie Pop-Up Selfie and Dual A.I Camera 16MP+5MP Depth Sensor Rear Camera.
  • 128GB Internal Memory, 4GB RAM. MicroSD up to 128GB.
  • 2.1GHz Octa-Core Mediatek Helio P70 Processor 64 Bit + A.I technology.
  • In-Display Fingerprint Sensor, Super 3,500mAh Battery 18W Ultra Quick Charger, USB Type-C and Wireless Charging compatible.
  • 4G LTE (1/2/3/4/7/8/12/13/17/28) 3G: (850/900/1700/1900/2100): US compatibility with GSM Networks including, T-Mobile, Metro PCS, and others. (Not....
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BLU G51 Plus | 2021 | All Day Battery | Unlocked | 6.5” HD+ Infinity Display | 64 GB | Triple 13MP Camera | US Version | US Warranty | 3/64GB | Green

  • Unlocked and ready to use with your preferred GSM Carrier. Compatible with AT&T, T-Mobile, Metro PCS, and others. Sim card not included. (Not compatible with NEW AT&T or Cricket activations or with CDMA Networks like Verizon, Sprint, and Boost Mobile).
  • All day battery – With the powerful 4,000mAh battery you will have energy all day long..
  • Capture the perfect image with the Triple 13MP+5MP + Depth sensor Main Camera and 8MP Selfie Camera.
  • 6.5” HD+ Infinity display, to enjoy all your movies and pictures..
  • Breeze through all your apps with Octa-Core Processor |1.6GHz |ARM Cortex-A55.
  • Operating System: Android 11, Fingerprint Sensor for added security..
  • Box Content: G51 plus, Charger, USB Cable, Case, Screen protector, Quick Guide, Sticker..
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Geeni Wi-Fi Door Sensor Smart Door and Window Sensors White 2-Pack No Hub Required – Wireless Design Instant Alerts Requires 2.4 GHz

  • SMART HOME SECURITY SENSORS: The Geeni Door & Window Sensor gives peace of mind, anywhere, anytime. Get real time alerts at the exact moment you have....
  • NO HUB REQUIRED: This smart home door and window sensor system works with your home Wi-Fi—no hub required! Simply download the Geeni app, mount your....
  • COMPATIBILITY: The Geeni Door and Window Sensors are only compatible with 2.4GHz Wi-Fi networks. The sensors easily install in any entryway and the....
  • CONTROL FROM ANYWHERe: Using your home Wi-Fi, you can set up automated actions with other Geeni Smart Home products such as automatically powering on....
  • LONG-LASTING PERFORMANCE: The Geeni Door and Window Sensors are CR2 battery-powered for a long-lasting performance. You can put your mind at easy....
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Arduino MKR WiFi 1010 [ABX00023]

  • MKR 1010 simplifies the prototyping of WiFi-based IoT applications, easily connected and configured to other Arduino products. You do not need to be a network expert!.
  • The hybrid WiFi / BLE connectivity module has a low power consumption mode, improving the life of your batteries..
  • Ideal for: Entry point to and professional IoT, building wireless sensor networks in minutes, remotely operated devices..
  • Cloud features: the board can connect to any kind of existing WiFi network, or use it to create your own Arduino Access Point. It is also possible to connect your board to different Cloud services, including Arduino IoT cloud!.
  • Simply to power with a USB cable or external Li-Po 3.7V battery. Recharge the battery through the USB port..
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Wyze Cam 1080p HD Indoor Wireless Smart Home Camera with Night Vision, 2-Way Audio, Works with Alexa

  • Magnetic base, 6-foot power cable and included adhesive metal plate let you mount your Wyze Cam anywhere – no screws required.Image Sensor Type: CMOS Sensor.
  • Works with Alexa: Ask Alexa to show your front door, kid’s room, or anywhere else you have your Wyze Cam , Smart Sound Recognition – Wyze Cam recognizes the unique sounds of smoke alarms and CO monitors and alerts you to these specific emergencies.
  • Motion and sound detection with free rolling 14-day cloud storage. Use the Wyze App (iOS and Android) to manage and share multiple cameras. Add a microSD card (up to 32GB max size) for local storage..
  • 1080p full HD live stream direct to your smartphone day or night with night vision (up to 30 feet away). Works with 2.4GHz Wi-Fi networks (does not support 5GHz Wi-Fi).
  • Motion Tagging technology detects and outlines motion in both live stream and playback video modes. Operating system supports ios 8.0 and android 5.0 or later..
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TCL 20 Pro 5G Unlocked Smartphone with 6.67” AMOLED FHD+ Display, 48MP OIS Quad Camera, 6GB+256GB, 4500mAh Battery, US 5G Verizon Cellphone, Marine Blue (Does not Support Sprint/AT&T 5G)

  • Unlocked Smartphone: Compatible with Verizon 5G and LTE network, T-Mobile 5G and LTE network, AT&T LTE networks (without AT&T 5G). If your device doesn't work with Verizon, please restart the phone. If your device experiences an error when making calls on Verizon, your account may need to be provisioned to support “CDMA-less” devices with the assistance of Verizon’s technical support team or your account’s business representative. This device isn't compatible with CDMA networks-such as Sprint, Spectrum, Xfinity,etc..
  • The Power of 5G: Experience revolutionary speeds, faster streaming, quicker downloads, as well as enhanced AI features and hyper-accurate GPS with the Qualcomm Snapdragon 750G 5G Mobile processor. And 6GB of RAM provide effortlessly smooth performance. More sharing, more gaming, more experiences, never miss a beat.This Model is made for the US with a one-year US warranty..
  • NXTVISION 2.0 Intelligent Display: Discover seamless visuals that go beyond the edge with the TCL 20 Pro 5G smartphone's 6.67-inch FHD+ NXTVISION AMOLED Dotch Display. Immerse yourself in a vivid, true-to-life visual world. The phone's AI visual enhancement intelligently detects your environment's lighting and automatically enhances brightness, color, clarity, an....
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