The AM25T is typically used with thermocouples. It uses solid-state relays, which have a varying impedance from one closure to the next. This impedance is higher than the impedance in the mechanical relays used in the AM16/32-series multiplexer or the retired AM416 multiplexer. Bridge circuits (107/108 probes, PRTs, load cells, strain gages, and pressure transducers) should not be connected to the AM25T because of the varying and higher impedance values (compared to the AM16/32).