Salus iT500RX - 10 Temperatures Outside Operating Range

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10. Temperatures outside operating range
Temperatures below 10 °C are displayed without the leading ‘0’. Temperatures exceeding the measurable range will be indicated by ‘HI’ for temperatures
above the upper limit, and ‘LO’ for temperatures below the lower limit, as shown in the images.
Thermostat view:
App view („Lo” example):
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AUAU TOTO