He suspected EMF interference so as a quick first step he decided to throw together an EMF detector using an Arduino. It uses a bank of LEDs as an indicator bar to reflect the EMF picked up by the ...

There’s a huge market for 433 MHz alarm system hardware out there, from PIR motion detectors to door and window sensors. If you want to put them to work, all you need is a receiver, a network ...

We've developed numerous Arduino modules for various fields of teaching. Each section is divided into kindergarten through 6th grade and 6th grade through 12th grade. While some of these modules can ...

Powered by an Arduino Uno, this laser tripwire alarm project works much like those in movies. There's a tripwire — made up of a laser directed at a light sensor — that's placed somewhere the intruder ...

Arduino Nicla Sense Env is a new sensor module with temperature, humidity, and gas (TVOC, NO2, O3) sensing that follows the launch of the Arduino Nicla ...

The wireless DUAL TEC® motion sensor provides faster and more reliable detection using K-band microwaves to quickly verify the PIR signal prior to any alarm decision. Because K-band operates on a ...

These door and window alarm sensors come with batteries preinstalled, so we aligned the two parts of the sensors on doors and started testing. A small switch on the side of each sensor turns the ...

This is the product's overall performance score, based on key tests conducted by our industry experts in the CHOICE labs.

Carbon monoxide alarms use a variety of detection methods, and the kind of sensor is often directly related to the power source. Keep in mind that carbon monoxide alarms can also include smoke ...

Commissions do not affect our editors' opinions or evaluations. A driveway alarm system is a budget-friendly, easy-to-install, basic security system for your home. Although they may lack the ...

Pro Tip: Keep your home chirp-free with SimpliSafe smoke alarms. With the Heartbeat feature, SimpliSafe constantly checks ...