Remote control type UPW-SPC 2 channels - WITH DISCRETE CARRIER CONNECTION (one signal each 100ms) MONODIRECTIONAL TOWARDS THE RECEIVER - N° 2 push buttons with 2 buttons UP-DOWN + 2 buttons START - STOP + control lights of charging and transmission. The receiver automatically goes to EMERGENCY STOP if the signal of the push button (EMITTER) doesn't occur for more than 600ms.