there is a bypass led and an email led indicator below the display window, however the display window always shows the clock not channel numbers-this box was just installed 2 wks ago as part of time warners "digital upgrade" they came back and replaced it then rechecked signal strength-because channels above 100 would periodically freeze up or not come in at all, also box would shut itself down-they are blaming condominium wiring i changed all exterior cables to rg6-trying to monitor the signal strength to report the fluctuations i think they have a leak-