The Radio Shack Chronomatic-300 is a versatile and feature-packed device that allows you to easily manage your daily schedule. To ensure you make the most of its capabilities, make sure to download the free user manual from our website, where it is available for instant download and provides detailed instructions for optimal use.
NOTES: The * and # buttons have no effect when TONE/PULSE is set to PULSE.
If you have pulse service and want to use a special service that requires tone signals (such as bank-by-phone), see "Using Tone Services with a Pulse Line.