Automatic Printing - Custom Printer ID

functions.php

<?php
/**
 * @snippet       WooCommerce - Print to different printerID depending on shipment method
 * @author        Redlight Media AB / Christopher Hedqvist
 * @compatible    WooCommerce 4.4.0
 */
function redlight_print_labels_to_customer_printer($printjob, $order) {
    if( strpos($printjob['title'], 'Packingslip') !== false) { 
     return $printjob;
    }
    if( strpos($printjob['title'], 'Invoice') !== false) { 
     return $printjob;
    }
    if( 'Brev i posten' === $order->get_shipping_method() || 'Fri frakt' === $order->get_shipping_method() || 'Free delivery' === $order->get_shipping_method() || 'Postage' === $order->get_shipping_method() ){
        $printjob['printerId'] = 69652734;
    }
    return $printjob;
}
add_filter('redlight_wc_automatic_printing_data', 'redlight_print_labels_to_customer_printer', 10, 2 );