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 ...

Researchers have developed a battery-free underwater communication system that uses near-zero power to transmit sensor data. The system could be used to monitor sea temperatures to study climate ...

The $50 sensor runs on two coin cell batteries so you don’t need a nearby power source for installation. The $50 sensor runs on two coin cell batteries so you don’t need a nearby power source for ...

Sensors play a crucial role in the Internet of Things, but there's one glaring limitation: they need a battery or some other conspicuous power source to run. Soon, however, they might only have to ...