OBVIOUSLY demonstrated for repeat performances! When inserting the transmitter, she showed just pushing the transmitter flat into the sensor, but after she claimed it was snapped in place, it was obvious the tab at the narrow end of the transmitter was NOT inserted into the retainig loop on the sensor so although the two rear locking tabs might have been holding the transmitter, after the video she could easily lift the narrow end of the transmitter and with a slight twixt, get the locking tabs to release allowing the transmitter to be removed!!! Why didn't she demonstrate PROPERLY inserting the transmitter with the front tab under the sensor retaining loop as it's designed to insert???