The Intronics thermostat typically has a 0.5°C to 1°C hysteresis (swing). This means it will turn on when the temperature drops 0.5°C below your setpoint and turn off when it reaches the setpoint.
If the thermostat reads inaccurately compared to a separate room thermometer: intronics digital room thermostat user guide
Repeat the process for when you leave the house, return home, and go to bed. The Intronics thermostat typically has a 0