librenms-librenms/includes/discovery/power/extreme.inc.php

<?php

echo(" EXTREME-BASE-MIB ");

// Power Usage
$descr   = "Power Usage";
$oid     = "1.3.6.1.4.1.1916.1.1.1.40.1.0"; // extremeSystemPowerUsage
$value   = snmp_get($device, $oid, '-Oqv', 'EXTREME-BASE-MIB');
$divisor = "1000";
$value	 = ($value / $divisor); // Nasty hack to divide the first value by 1000 since the divisor only works for polling after the sensor has been added

if (is_numeric($value)) {
    discover_sensor($valid['sensor'], 'power', $device, $oid, '1', 'extreme-power', $descr, $divisor, 1, null, null, null, null, $value); // No limits have been specified since all equipment is different and will use different amount of Watts
}

// EOF