Saswell T19WHB-7-RF - Configuration Menu Setting

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CONFIGURATION MENU SETTING
In standby mode ,hold button more than 3 seconds enter the first of
configuration menu setting. Press 、 to adjust parameters. Press
button again enter next item, press button confirm and return to standby
mode. If no button is pressed within 10 seconds, the thermostat will
automatically exit configuration setting and back to standby mode.