3 Digit Preset Timer

XT56 :: 3 Digit, Thumbwheel setting XT532 :: 2 Digit, Multifunction (include cyclic), programmable XT520 :: 3 Digit, Multifunction (include cyclic), programmable XT51P :: Preset timer (No Display), thumbwheel setting XT51C :: Cyclic timer (No Display), thumbwheel setting XT20B :: 23 Digit, Digital Timer, Thumbwheel setting XT242 :: 4+4 Digit, Programmable, multifunction timer