Attributes . Radio (license-free and global): WPAN 802.15.4, 2.4 GHz, point-to-point FCC 15, IC, ACMA & ETSI EMI Immunity Up to 304 m [1000 ft] communication range when used with a Limitless™ wireless monitor or receiver module (sold separately) Reliable, flexible, and secure wireless transmission Standard replaceable battery with ultra-low power consumption Direct or remote mount antenna options . Names