In this video, I'm making a carbon monoxide monitor for my home using an MQ7 carbon monoxide sensor, a DHT11 temperature and humidity sensor, and a NodeMCU microcontroller board. This sensor is ...

I've reviewed security systems from all major brands. Here are my most important recommendations when you're ready to set up your own.

Aqara makes a range of HomeKit-compatible smart home devices for multiple regions around the world. This review takes a look at six of Aqara's most popular products, including the Camera Hub G2H, ...

Sometimes we need a non-contact liquid level sensor. There are several ways to build that, but the easiest is to try an optical liquid level sensor. You may already have an idea in mind since you are ...

A well-designed product that adds a new aspect of protection to Ring’s home security systems, the Ring Flood and Freeze Sensor works as advertised. But it’s not unique by any means, and it requires ...

This water sensor’s use of outlet power is both a curse and a blessing. Where competing smart water sensors have zigged, D-Link has zagged with its DCH-S160 Wi-Fi Water Sensor. The biggest ...

The R58A features simplified setup via potentiometer adjustment of the switching threshold and switch-selectable light/dark operate. The sensor's short warm-up period, fast 10 kHz switching frequency ...