The Noise-Sentry-RT-W is always on. However, when not in operation it only measures time, which only takes a tiny operating current. In that Idle state it can stay on for up to 6 months. When the Noise-Sentry-RT-Wis actively measuring, its power consumption allows it to record for 1 week.

 

The Noise-Sentry-RT-W can be configured to connect to a server at regular intervals. When that function is enabled, the Noise-Sentry-RT-W will activate its WiFi™ interface at the defined interval, and attempt to connect via WiFi™ for up to 1 minute. During that time, the instrument’s power consumption will be increased. If the connection fails the Noise-Sentry-RT-W will fall back to its previous state (Sleep or Recording).

 

Note: WiFi™ communications consume battery, so when leaving the Noise-Sentry-RT-W unused for a long time, it is important to disable the WiFi™ periodic connection feature.

 

In applications where the Noise-Sentry-RT-W must record for longer periods of time, it can be connected to a USB charger. For outdoor-use, photovoltaic USB chargers such as the Solar Joos http://solarjoos.com/ can be used to operate the instrument outdoors for very long periods of time, as long as the hours of sunshine are sufficient.