... hold function, high & low temperature settings, high & low temp indicator (audible alarm), interchangeable J & K type thermocouples, stores up to ... The meters are also equipped with a dual-level LCD that shows measured high and low temperatures along with the current reading ... 1 time / sec · Auto power off : about 20min · Low battery indicator ·Operating environment: 0~+50(32~+122F), 0~80%RH ·Storage ...