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Best Gprs Alarm

4G LTE Vehicles Car GPS Tracker,Waterproof 4G GPS Tracking Device Motorcycle Trucks Locator Finder Strong Magnetic/Real Time Track/Alarm/Monitor 7800 mAh - 4G TK915

  • ...ds a SIM card that supports 4G/2G Cellular. Make sure the SIM card must be able to make calls and send text messages, and has a subscription plan for data traffic that no less than 30M monthly. It has built-in 3.7V 7800mAh Li-ion battery, can standby up to 80 days. Working time: 2 Week..
  • ★Powerful Magnetic & Shake Alarm ---- It has 6pcs built-in magnets,with super strong powerful magnetic,can be very easily installed.: After you did the shake alarm setting,please keep the tracker being stationary for 5 minutes, then this function will start working. It will send SMS "sensor alarm!" to the admin number when the unit get shocked..
  • ★Electronic Fence---- It has electronic fence, over speed, low power alarm,track the location of vehicles. Call the tracker, recieve an instant location map to your phone/tablet/PC of exactly where the tracker is located. You can track the history route of the device up to 6 months via both the web platform and APP!.
  • ★Overspeed Alarm ---- This alarm works only under continuous positioning mode.When the unit speed is exceed the speed you presetted, it will send message "speed alarm!" to the admin number every 5 minutes..
  • ★Sleep Mode ---- 1.Sleep by time mode: After did this setting, tracker will only work for 5 min....
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Development Board Module Kit Fit for 850/900/1800/1900 MHz GPRS/GSM Antenna, 5~26V

  • Computer debugging USB--TTL. This module is powered by: 5V-26V, 5V 2A power supply is recommended. After plugging in the motherboard, the power supply must be able to supply 2A. The reason is that the GPRS Shield startup current and the maximum top current required to work up to 2A, but the USB port can not provide such a large current, so the external power supply equipment must be provided..
  • The other power supply port leads to the 3.7--4.5V power supply for lithium battery power supply. The serial port is perfectly compatible. The TTL serial port is compatible with 3.3 and 5V microcontrollers..
  • Make sure your SIM card is not locked. The best baud rate for GPRS Shield communication is 19200 BPS 8-n-1 (GPRS Shield automatically matches baud rate by default). Quad-Band 850 / 900/ 1800 / 1900 MHz - would work on GSM networks in all countries across the world..
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CNPGD Smart Watch for Android Phones Samsung Iphone Compatible Quad Band Unlocked Watch Cell Phone for Men and Women Touch Screen Fitness Tracker Pedometer Sleep Monitor

  • Sync function(Only for Android) - Whatsapp,Twitter,Facebook,Browser(need put a 2G/2.5G network SIM card).
  • Sport health: sleep monitoring,sedentary remind. Other functions: Image viewer, Sound recorder (need put and SD card ), Remote capture, Alarm clock, Calendar,Camera (0.3M),Two way Anti-lost..
  • DON'T take to shower or Use in water(Little water on face such as small rain or Washing Hands is OK). Designed to charge by computer USB port, don't use other chargers, incorrect charge by other charger may hurt the battery. Don't heat battery or use in a hot condition(such as hot car in summer)..
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Module,Development Board Module Kit,5~26V SIM Development Module,Fit for SIM900 850/900/1800/1900 MHz GPRS/GSM,Quad-Band 850/900/ 1800/1900 MHz - Would Work on GSM Networks

  • Computer debugging USB--TTL. This module is powered by: 5V-26V, 5V 2A power supply is recommended. After plugging in the motherboard, the power supply must be able to supply 2A. The reason is that the GPRS Shield startup current and the maximum top current required to work up to 2A, but the USB port can not provide such a large current, so the external power supply equipment must be provided..
  • The other power supply port leads to the 3.7--4.5V power supply for lithium battery power supply. The serial port is perfectly compatible. The TTL serial port is compatible with 3.3 and 5V microcontrollers.Speaker and Headphone jacks..
  • The best baud rate for GPRS Shield communication is 19200 BPS 8-n-1 (GPRS Shield automatically matches baud rate by default).Quad-Band 850 / 900/ 1800 / 1900 MHz - would work on GSM networks in all countries across the world..
  • GPRS multi-slot class 10/8.GPRS mobile station class B. Compliant to GSM phase 2/2+. Class 4 (2 W @ 850 / 900 MHz).Class 1 (1 W @ 1800 / 1900MHz).Control via AT commands - Standard Commands: GSM 07.07 & 07.05 | Enhanced Commands: SIMCOM AT Commands..
  • Short Message Service - so that you can send small amounts of data over the network (ASCII or raw hexadecimal).Embedded TCP/UDP stack - allows you to upload data t....
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HiLetgo Smallest SIM800L GPRS GSM Breakout Module Quad-Band 850/900/1800/1900MHz SIM Card Slot Onboard with Antenna 3.7~4.2V

  • Mini GSM / GPRS breakout board is based on SIM800L module, supports quad-band GSM/GPRS network, available for GPRS and SMS message data remote transmission..
  • The board features compact size and low current consumption. With power saving technique, the current consumption is as low as 1mA in sleep mode..
  • It communicates with microcontroller via UART port, supports command including 3GPP TS 27.007, 27.005 and SIMCOM enhanced AT Commands..
  • AT command interface with "auto baud" detection..
  • TTL serial port for serial port, you can link directly to the microcontroller.
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CNPGD [U.S. Office & Warranty Smart Watch All-in-1 Weather Proof Smartwatch Watch Cell Phone for Android, Samsung, Galaxy Note, Nexus, HTC, Sony (Black, M)

  • ...ing answering and dial-up.SIM slot,Single SIM card (micro SIM card) can be as a phone,support make calls by Bluetooth or smart watch.
  • GSM/GPRS 850/900/1800/1900(2G,not support CDMA).
  • Sport health: sleep monitoring,sedentary remind. Other functions: Image viewer, Sound recorder (need put and SD card ), Remote capture, Alarm clock, Calendar,Camera (0.3M),Two way Anti-lost..
  • Choice 1: USE as cell phone(Sim Card/ Memory Card needed, not included) Use as cell phone, activated GSM 2G Sim Card needed(for internet access, GPRS function also needed). Which Carrier’s Sim Card is AVAILABLE for this watch? T-Mobile, Straight Talk, Lycamobile, Speedtalk, Ting GSM, Simple Mobile or ANY carrier’s GSM 2G Sim Card is available for this watch AT&T, T-Mobile or ANY carrier’s GSM 3G/4G/5G Sim Card is NOT available Verizon, Sprint, Boost, PagePlus and ANY CDMA carrier Sim Card is N.
  • Sync function(Only for Android) – Whatsapp,Twitter,Facebook,Browser(need put a 2G/2.5G network SIM card).
  • Choice 2: Download Android APP: https://amzn.to/31gvBCo USE as Smartwatch(No Sim Card Needed) Android OS version 4.0+ Smartphone(ANY BRAND) or IOS 8.0+ Iphone Needed. With Bluetooth(find in ....
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TKSTAR GPS Tracker Car GPS Tracker for Vehicles Realtime Tracking Waterproof Portable Magnetic Tracking Device 90 Days Long Standby Free Tracking & Monitoring System TK905

  • 【4G NETWORK】SinoTrack 4g mini car gps tracker for Motorbike, Built-in LTE, GSM and GPS double antennas with ACC to detect ignition.ST-901L....
  • 【MAIN FUNCTION】SinoTrack vehicle mini GPS tracker for car Motorbike, Built-in LTE/GSM and GPS double antennas with ACC to detect ignition.(SIM....
  • 【SUPPORT TRACKING PLATFORM LIFETIME】Waterproof GPS location tracker with online tracking service subscription. Buy a SIM card for the device (this....
  • 【REAL TIME TRACKING】Real-time car GPS tracker ST-901L Anti Lost Alarm Locator based on LTE, GSM , GPRS network and GPS satellites , locating and....
  • 【HISTORY MEMORY】Sinotrack car GPS tracker can save 2 years of tracking history. GPS location tracker device with 2 time interval, You can view and....
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USR 4G LTE Modem USR-G781 Industrial Celluar Serial Modem Data Converter to Ethernet Support APN and VPN Network

  • Support Dual Frequencies: GSM/GPRS 900/1800MHz.
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Dual Band GSM Modem with Wavecom M1306B Q2406B Module Wireless at Commands Data SMS

  • (4)Working Frequencies: GSM/GPRS 900/1800Mhz..
  • (5)Packing List:1x Modem, 1x Serial Cable,1x Power Adapter,1x Antenna..
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Dual Band GSM Modem with Wavecom M1306B Q2406B Module at Commands SMS 900/1800Mhz

  • (4)Working Frequencies: GSM/GPRS 900/1800Mhz..
  • (5)Packing List:1x Modem, 1x Serial Cable,1x Power Adapter,1x Antenna..
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Dual Band GSM Modem with Wavecom M1306B Q2406B Module at Commands Data SMS 900/1800Mhz

  • (4)Working Frequencies: GSM/GPRS 900/1800Mhz..
  • (5)Packing List:1x Modem, 1x Serial Cable,1x Power Adapter,1x Antenna..
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DIGI XTP9B-PKI-R XTend-PKG-R Serial ~900 MHz RF Modem, 9XTend Replacement, PKG, RS232/485, North America

  • Support Quad Frequencies: GSM/GPRS 850/900/1800/1900MHz.
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Taidacent SIM800L GPRS GSM Module Micro SIM Card Core Board GSM Quad Band TTL Serial Port ESP32 ESP8266 SIM800L

  • SIM800L GPRS GSM module micro SIM core board quad-band TTL serial port is ESP8266 ESP32.
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