1.5+1+1 mode preset adjustments per week; programmable settings for 6 time periods per day; green and energysaving. LCD display screen with adjustable backlight; knob type temperature adjustment; embedded panel; suitable for 86 type cassette. Child lock function to prevent accidental changes, helping avoid unnecessary electricity consumption. Supports group control and home sharing. Use scenarios Scenario 1: In a family home with varying daily routines, set different temperatures for morning, day, evening, and night to balance comfort and energy savings while keeping maintenance simple. Scenario 2: In a shared living space or dorm, use group control to coordinate temperatures across rooms and share access with roommates, making cooling or heating management straightforward. Scenario 3: In a childfriendly environment, enable the child lock to prevent accidental adjustments that could lead to wasted energy or uncomfortable temperatures.