Check manual page of entity_sensors_power_presence

Generic Entity Sensor: Power Presence
Distribution	official part of Check_MK
License	GPLv2
Supported Agents	SNMP

This check monitors whether power supply is turned on for devices that support the ENTITY-SENSORS MIB. By default, sensors that detect power is off generate a service that shows a WARN state. This is configurable for individual sensors using the "Power Presence Sensors" monitoring ruleset.

Item

The name or index of the sensor.

Discovery

One service is created for each sensor.