Yes! The sensor wire can be extended up to 500 feet with #18 awg wire and 2000 feet with #12 awg wire.
Be sure to follow NEC and local code for all electrical connections. Be sure to follow NEC and local code for all electrical connections.
A three-conductor direct-burial wet-environment cable is required to connect the sensor to the control panel. The cable supplied meets these requirements. An extension cable, which must be the same type, can be used but is not supplied by the manufacturer. The extension length may be up to 500 ft (152m) using 18 AWG 3-wire jacketed cable, or up to 2,000 ft (609m) using 12 AWG 3-wire jacketed cable.
Make sure that any cable runs greater than 60 feet are spliced together either in a suitable water-tight junction box or in some other water-tight or dry location.