Jai balaji presents a micro-controller based 2 digit pro-grammable timer, dc 99. This has universal input voltage ranging from 24v ac/dc to 230v ac/dc with single change over relay contact rat-ing of 5a @ 230v ac. The unique feature of these timers is that they can be locked to avoid tampering with the pa-rameter setting as non volatile memory saves the parameter settings.
Other useful features of the timer include on delay, interval, unequal cyclic modes and the time ranges from 0.1 sec to 99 hours.
