Mine works most of the time....but does take several minutes (up to 5?) to finally pick up all 8 tires (4 on tv and 4 on fiver). But while towing, sometimes a sending unit will drop off. When that happens, it seldom reconnects...but if I cycle the power on the receiver, it will often reconnect. It isn't always the same one that drops off. I have been thinking about getting a repeater...might be time. Doesn't do a lot of good to invest in this device if you can't receive signal. If Murphy has his way, you'll develop a problem on the tire that you just lost signal from!
DNC