PomStream Wireless Digital Thermometer with Probe CLEAR DIGITAL SCREEN Large screen display, easy operating system! RF 40-50 meters wireless transmitting. Don't use the thermometer over 25 meters (65 feet), the distance range is 25 meters, if over the distance, it can't detect the temperate. TEMPERATURE SETTINGS LCD Temperature Display in C of F with Red Backlight. Don't use the thermometer over 250?,otherwise it will burn out the probe, as the working temperature range is 0?-250??32?-482? ) PROBE can touch the meat and monitor internal temperature of meat. Don't expose probe or probe wire to open flames or barbeque, keep away the probe wire from the high heat, otherwise it will cause short circuit and deteriorate the probe. TARGET TEMPERATURE Settings are manual; RF wireless temperature; TIMER Count up/down timer, POWER 4*AAA(not including)