I have installed the Carchet Tire Pressure Monitoring System on my 5th wheel trailer. It is installed according to directions and I have been out with it a few times. I works initially but the pressure readings for one or more tires randomly drops to 0 setting off the alarm. I have pulled off the highway several times to check the tires only to find that nothing is wrong. The sensors are about 15 ft from the repeater. The repeater is about 15 ft from the display.
There is no technical assistance or customer service phone number listed in the manual. Only and email address is given. I have contacted them but have received no reply. So I seem to be stuck with a useless system and still have no way of knowing when I get a flat. Any ideas?