If you want to set “Bell Table”

Present (Swipe) Master Card to TR4030/TR4050 to enter the menu of programming mode. Then select [Setup]->[Edit bell table]. Press F4 key to enter and then set the time you want with the keypad. (The time format is “hh:mm:ss”.) If you want to erase the bell time you just entered, press F3 key. After the bell time is entered, press F4 key to confirm and then press F1 key to exit.