You can buy the Sensor, which comes with everything you need to attach it to your mailbox, as well as an antenna for $29.99. Or you can buy the Sensor and a Ring Bridge for $49.99.

The sensor contains an antenna that captures the energy from the router. The sensor stores that energy and, once there is enough, the sensor switches on, measures the temperature and sends a ...

A team at the Council for Scientific and Industrial Research's (CSIR's) Meraka Institute has developed a novel concept to extend the power consumption of fixed wireless sensor networks. This was ...

With the directional antenna that the CSIR Meraka team has developed, initial tests have shown that it can reduce power consumption by between 3 and 30 times and improve battery longevity by ...