PetSafe Wireless Containment System Material: Completely wireless Signal field is a circular boundary Maximum range is;a 90 foot radius - can be increased with additional transmitters - See Below Minimum range is 5 feet from transmitter Designed not to correct during a power outage Receiver is constantly looking for a signal Will only correct when the receiver loses the signal from the transmitter 6 adjustable levels of correction Tone only training mode Can be used with a unlimited number of pets, each wearing a collar Protection against false signals Only our transmitter can activate the receiver Receiver Fail-Safe If your pet leaves the correction zone, the receiver will shut down after 25 seconds to prevent over correction In case of a Power Outage the System Turns Off the Collar Waterproof Collar Low battery indicator light Lightweight 25 ounce receiver Owners Manual PetSafe RFA-67 Battery 50 Training F...