Velleman mini pic plc application module velleman vm142 it s small in size but the velleman mini pic plc application module is big in heart and big in performance you can create your own custom application without the hassle of making the hardware with the velleman application module all the buffered inputs and outputs are ready made for you the vm142 features an on board led a relay output and an audible warning buzzer suitable for home or automotive applications all you need is a pro