We suggest that you contact the manufacturer of your pacemaker and inquire about whether your pacemaker is susceptible to RF emissions consistent with the frequency of our device. Libris complies with the rules and regulations required of a transmitting device such as ours. Libris emits a radio frequency (RF) of 850 and 1900MHz associated with standard 2G and 3G cellular communication, and it is in compliance with FCC Part 15 restrictions, including those for radiated emissions.