The Halberd runs on a CR2450, 3-volt battery, while the Bluetooth sensor is powered by the PC. Gatekeeper manages logins via the desktop software, and setup is a relative snap.

Nokia is updating its Lumia Windows Phones with Bluetooth 4.0 support, and the Treasure Tag will be one of the first accessories to make use of the new Low Energy support.

How it works is simple: you can track devices using Bluetooth on the ESP32, and through a combination of presence and signal strength, you can define a sensor that changes to an "on" state when your ...

Consider the “Kestrel” brand of weather sensors if precision to 10ths is ok. I’ve had a handheld 3500 model for a year or so. Live at 8500′ and have seen very low wet bulb and RH values.

The FWM8BLZ02A-109069 Bluetooth 4.1 sensor beacon from Fujitsu enables on-demand reporting in remote monitoring and tracking applications. Based on Nordic Semiconductor’s Bluetooth Low Energy nRF51822 ...

I really hate this 6/9/12 axis nonsense that we get nowadays. For those that don’t understand, when you see a “9-axis” sensor, it is referring to 9 different measurements.

Because Bluetooth is a low-energy technology, the creators say the sensors will last about two years before the batteries need to be changed. "The sensors work 24/7," Tih told Crave.