I feel the door should require a sensor stop as standard. I didn’t realise the door would continue to attempt to close if even a small object was left in the way. I appreciate that the sensor is a sellable add on but as a consumer I’m surprised that the version I have is considered safe. On two occasions a small object has caused the doors motor to continue to close and eventually pull the grips off the track at the top causing some damage. This is a fault in the regs rather than the door. All doors should need a sensor in my opinion and therefore the cheaper version is redundant So as a consumer..buy the sensor basically. As the seller… consider the non sensor being practical