Can I use FM3001, FMU125 and FMU130 without battery?
My concern is that I cannot use these devices anymore over or lower temperature as below.
Battery storage temperature -20 °C to +45 °C for 1 month, -20 °C to +35 °C for 6 months
If I use these devices without battery, I think, I can use Operating temperature (without battery) -40 °C to +85 °C.