AcuRite's temperature sensor has a built-in thermometer to measure environmental conditions with precision and accuracy. The sensor features a compact size, weather-resistant design and integrated mounting options. The sensor wirelessly transmits its readings at 30 second intervals over distances up to 165 feet. Stay informed of temperature conditions in the places you care about with AcuRite's temperature sensor. It's more than accurate, it's AcuRite. Compatible with AcuRite models: 00250, 00251W, 00252W, 00380, 00381, 00415, 00416, 00417, 00418, 00419BP, 00420, 00421, 00424, 00425, 00508, 00509, 00510SBDDI, 00522, 00526, 00536, 00606, 00621, 00635, 00636, 00637, 00782W3, 00821SBDI, 00822, 00826, 00827, 00827HD, 00831A1, 00832, 00837W, 00837W1, 00838, 01031, 02023, 02028, 02029W, 02043, 02044, 02045, 02046, 02049, 02060, 75324, 75328, 75330, 75331, 75333TKL.