Reviews Gsm System

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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Sony Xperia XA Ultra unlocked smartphone,16GB Black US Warranty Renewed

  • Large 6” edge to edge display with narrow grip is comfortable to hold, fun to use, and delivers an optimal entertainment experience with image....
  • 23 MP Main Camera with hybrid Autofocus captures your split-second moments in sharp quality.Operating System: Google Android 7.0 (Nougat).
  • 16 MP front-facing camera with Optical Image Stabilizer (OIS) for taking amazing photos even in low-light conditions and livestreaming your....
  • 32GB onboard with up to 256GB expandable with mircroSD card. MediaTek Helio P20 Octa-core processor delivers improved power and performance.Multi....
  • Unlocked and compatible with GSM/LTE carriers utilizing GSM network such as AT&T, T-Mobile, Straight Talk, MetroPCS, Cricket wireless, simple mobile,....
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Bewinner Fixed Wireless Terminal Main Unit, Worldwide LED Fixed Wireless Terminal Quad-Band GSM 850/900/1800/1900Mhz Alarm with LED Lights Display for Telephone Landlines, Alarms, Recording Boxes(US)

  • ...g industrial wireless communication module, with high-quality signal to enhance the antenna, the signal is relatively strong, clear and stable voice quality.Easy to install. No need to invest in ground wire line, use GSM mobile phone SIM card,With automatic step-down circuit, you can directly use the security alarm system 12V power supply.Using anti-noise circuit design, anti-noise and anti-jamming.
  • 【GSM Network 】It can use the GSM network to quickly provide fixed wireless telephone communication services and data services within the coverage of the GSM cellular network.With a reverse polarity signal, you can access the meter or use the computer meter.Standard communication voltage, can be connected with the user switch (PABX).
  • 【Multifunction and High Performance】Support international and domestic, local, fixed/mobile voice services.Do not change the old dialing habits, the same as ordinary telephone landline operation habits.Fixed long-distance automatic insertion of the calling IP prefix, such as 17951,17911,193 and so on.Encryption settings, such as PIN code, PUK code encryption card lock function.
  • 【24 hours Work】Built-in watchdog automatic detection, automatic restart failure,all-round avoid the occurrence of crashes,to avoid missed miss....
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Sony Xperia XA1 Ultra 6 Factory Unlocked Phone - 32GB - Black U.S Warranty

  • Large 6” edge to edge display with narrow grip is comfortable to hold, fun to use, and delivers an optimal entertainment experience with image....
  • 23 MP Main Camera with hybrid Autofocus captures your split-second moments in sharp quality.Operating System: Google Android 7.0 (Nougat).
  • 16 MP front-facing camera with Optical Image Stabilizer (OIS) for taking amazing photos even in low-light conditions and livestreaming your....
  • 32GB onboard with up to 256GB expandable with mircroSD card. MediaTek Helio P20 Octa-core processor delivers improved power and performance.Multi....
  • Unlocked and compatible with GSM/LTE carriers utilizing GSM network such as AT&T, T-Mobile, Straight Talk, MetroPCS, Cricket wireless, simple mobile,....
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Amazon Basics Ultra-Soft Micromink Sherpa Blanket - Twin, Grey

  • Twin-size ultra-soft college-dorm blanket offers cozy comfort and versatile convenience.
  • ideal for on a bed or sofa or for bringing along when road tripping or camping.
  • Reversible design with flannel fleece (220gsm) on one side and faux Sherpa (280gsm) on the reverse.
  • both sides offer supreme softness and relaxing warmth for any season.
  • Made in OEKO-TEX Standard 100 factory, an independent certification system that ensures textiles meet high safety and environmental standards.
  • Easily mix and match with a variety of bedding, bath, storage, and decor products from the Amazon Basics College Dorm collection (sold separately).
  • Machine wash and tumble dry on low for easy care.
  • backed by an Amazon Basics 1-year limited warranty.
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SEHOMY Home Security System with GSM and WiFi APP Control, 16 Pieces kit Wireless DIY Burglar Realtime Alarm for Home Office & Shop, Apartment Security, Compatible with Alexa and Google Assistant

  • Wireless Door Sensors Alarm system with Touch Panel Design - 2.4-inch TFT color Touch Screen display.Easy operating and install, simple style man-machine interface and menu guide design. Date clock real-time display, host status at a glance. Support multi-language menu display, voice operation prompts and alarm SMS settings,ual horn alarm design. Please note: NO use together with our another seperate door sensor. Also You need to buy the SIM Card extra selbst.
  • WIFI / GSM / 2G / GPRS Real-time monitoring alarm Detector - our security alarm system Home Support APP push notification, SOS, SMS, Voice monitoring, alarm center networking. Real-time monitoring of family dynamics, high decibel live alarm through the host timely send SMS notification. You can also remote control home sensors setting, easily to remote arm/disarm all sensors.
  • Multi-zone location settings - SEHOMY apartment door security Support the main door, hall, distress, bedroom, window, balcony, perimeter, smoke, gas, carbon monoxide, water leakage, doorbell, PIR detector, door sensor detector, water leakage, power failure etc zone name settings - door alarms for home. Diffent zone type settings:outgoing zone, stay-behind defense, doorbell, silent defense, 24-hour defense zone, etc.
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Kozyard Rosana Hardtop Aluminum Permanent Gazebo with 2-Layer Sidewalls (10' x 10')

  • Dark brown colored rustproof aluminum frame, which is very strong and sturdy, built with 4 pcs 3.0"x3.0" triangular aluminum stand poles. All materials are built to last, never becoming rusty or deformed..
  • Hard metal top instead of normal fabric or polycarbonate material..
  • Galvanized steel roof strong enough to withhold any heavy snow. The roof loading capacity is 2000kgs.Don't worry it snows heavy..
  • Extremely durable PBV-coated polyester mosquito netting and removable steel railing on 4 sides. Double Track System allows you to add another layer of privacy sidewall. Include 2 layers sidewalls (mosquito set and strong 180gsm polyester solid sidewall), Mosquito net and privacy net are both included. The privacy curtain is fireproofed and waterproofed.
  • Includes 2 layers sidewalls(mosquito set and strong 180gsm polyester solid sidewall).
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Nokia N900 Unlocked Phone/Mobile Computer with 3.5-Inch Touchscreen, QWERTY, 5 MP Camera, Maemo Browser, 32 GB - U.S. Version with Full Warranty

  • This unlocked cell phone is compatible with GSM carriers like AT&T and T-Mobile. Not all carrier features may be supported. It will not work with CDMA carriers like Verizon Wireless, Alltel and Sprint..
  • Optimized for WCDMA 900/1700/2100, Quad-band EGSM 850/900/1800/1900, Optimized for 3G networks on WCDMA 900/1700/2100 Quad-band EGSM, 850/900/1800/1900. Does not support 3G on AT&T network..
  • Mobile computer with full cellular voice and messaging capabilities, 3.5-inch touchscreen display, slide-out full QWERTY keyboard, and powerful Maemo 5 operating system.
  • GPS for navigation and location services.
  • What's in the Box: handset, battery, travel charger, stereo headset (WH-205), video out cable (CA-75U), cleaning cloth, operating instructions.
  • Unlocked cell phones are compatible with GSM carriers like AT&T and T-Mobile as well as with GSM SIM cards (e.g. H20, Straight Talk, and select prepaid carriers). Unlocked cell phones will not work with CDMA Carriers like Sprint, Verizon, Boost or Virgin..
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DIY for Renters: Don't Call the Landlord

  • SCARE BURGLAR AWAY When someone trigger this alarm system that will be alarm to scare thief away and also will make a phone or sending a message to someone which you save the phone number on the main unit.(No chime,No Wifi,Only support 2G T-mobile SIM card).
  • BUILT-IN BATTERY This system work well when someone cut wires or power off. You don’t worry other people intrude your house when power off.
  • REMOTE CONTROL You can control this gsm alarm system Arm/Disarm/Voice Monitoring /Intercom by cellphone anywhere.
  • EMERGENCY HELP You can press an alarm button on the remote control when some emergency thing happen, this system will go off right now and will make a phone..
  • WARM PROMPT: The batteries are gifts. If the batteries are dead,pls buy it by yourself. If you don't know where buy it,pls contact us..
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