Kenwood TK-880 - Manual (Page 13)

9
TIME-OUT TIMER (TOT)
The purpose of the Time-out Timer is to prevent any caller from using a channel
for an extended period of time.
If you continuously transmit for a period of time that exceeds the programmed
time, the transceiver will stop transmitting and an alert tone will sound. To stop
the tone, release the PTT switch.
Your dealer can program the TOT time in the range of 30 seconds to 5 minutes.
HORN ALERT
If Horn Alert has been activated by your dealer, your vehicle horn or some other
type of external alert, will sound when certain calls are received. This is a useful
function when you are away from your vehicle.