Monitor your cook from up to 1000 feet away. Includes two dual-purpose waterproof probes with wires rated up to 716F. Set target meat temperatures and high/low grill ambient alerts. Count-up and count-down timers for precise cooking control. INSTA-SYNC technology updates transmitter and receiver instantly. Audible alerts and screen flashes notify when temperatures reached fall or exceed. Grill clip for attaching ambient probe to grill grates. Lost signal alert - out of range or signal is lost. Requires 4 AAA batteries (included).