librenms-librenms/includes/discovery/humidity.inc.php

<?php

echo 'Humidity : ';

// Include all discovery modules
$include_dir = 'includes/discovery/humidity';
require 'includes/include-dir.inc.php';

if ($debug) {
    print_r($valid['sensor']['humidity']);
}

check_valid_sensors($device, 'humidity', $valid['sensor']);

echo "\n";