Devices With Internal Sensors

Power distribution for "M" models is shown in the diagram below. These devices may be powered by:

• An internal industrial-grade, 3.6V/19Ah battery ("B" models)
• An external 12/24V power source, through a side power line ("L" models)
• Auxiliary power port, which is compatible with 5V USB power sources

The auxiliary port is meant as a temporary power source: If the internal battery is depleted and no other permanent power source is available, you can bring the device back to life by connecting a standard USB power bank to the auxiliary port using the included cable.

Power Priorities

When several power sources are available, OSS has two power priority levels:

• High priority: 12/24V side power (or V+ power when this line is used as a power input) OR 5V auxiliary power*
• Low priority: 3.6V internal battery power

The above means that the battery power is consumed only when no other power source is available.

* When both the 12/24V side power (or V+ power) and the 5V auxiliary power are applied, the OSS' choice is undetermined. However, this scenario makes little sense in practice, as the 5V auxiliary source is meant for situations when the battery is depleted, and no line power is available.