Abstract: Technology is advancing rapidly every day, and unfortunately, criminal groups are also adopting modern methods to carry out their activities. To counter this, security systems must evolve ...

Abstract: Wheelchairs are essential for people with physical disabilities, the elderly, and those who are temporarily incapacitated due to illness or accidents. However, traditional wheelchairs ...

const int ledPin = 13; // led connected to digital pin 13 const int knockSensor = A0; // the piezo is connected to analog pin 0 const int threshold = 500; // threshold value to decide when the ...

int gsmPowerPin = 6; // Digital pin connected to the GSM module's power toggle switch byte serialBufferDelay = 10; // The delay in milliseconds to wait in between each character being sent to the GSM ...

This GSM/GPRS device combines a dual-band world phone with BlackBerry e-mail functionality. Other key features include a web browser, PIM (organizer) features, and thumb wheel for easy navigation.

4G bands 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 32, 38, 39, 40, 41, 42, 48, 66 - version 1 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 26, 28, 38, 39, 40 ...