VM130 information about user manual


Hi I intend to use the VM130 to open and close a garage door using one channel with 30s timer for up and the other channel with 30s timer for down. The motor has regular adjustable stop contacts inside so it will stop before the end of delays. However, the user manual says that pushing one time the Tx button activate the related relay and its timer and pushing again this same button deactivate the timer. Does that mean that the relay will return so immediately to OFF mode or does that mean that the relay will stay ON permanently without any cut off through the timer that has been deactivated?
Another question, if the channel 1 is activated with timer by button 1 and I push by accident button of channel 2, does the motor will receive both up and down orders that could induce a burning or malfunction for it?