(Tri-tronics) The Sport Upland G3 with beeper allows you to control both the beeper and trainer functions right from the transmitter. The transmitter can control up to three dogs with the purchase of extra receiver collars (one included) with a separate button for beeper control. It’s waterproof and ergonomic, with a ribbed over molding and compact, fixed antenna. The transmitter runs off a 9-volt battery (included). Receiver is waterproof with an on/off button and battery-status LED. The Upland G3 Beeper produces an impressive audible range for dog location. It is also waterproof and uses a separate 9-volt battery (included). It has a choice of eight sound modes, with hunt/point and point-only settings. 1/4-mile range.