- Backlight on/off function: The water level meter has a display backlight that can be turned on or off for easy reading in any light. - Time display 12H/24H: You can choose between 12-hour and 24-hour formats. The default display on power-on is 0:00 in 24-hour format. - Transmitter low battery alert: A low battery reminder on the transmitter helps prevent unexpected power loss. - Alarm function: You can set reminders for specific times or events. The default display on power-on is 0:00. - Summer on/off: The device allows you to enable or disable the buzzer. This setting does not affect the alarm mode. - Indoor temperature display: The unit shows indoor temperature in Celsius or Fahrenheit. The default is Celsius. - Product specifications - Power supply method: The receiver can be powered by 3 AAA batteries or a Type-C power cable. The transmitter uses 6 AAA batteries or an integrated solar panel that recharges the built-in battery in sunlight. - Temperature and water level measurement: Measures temperature and water level. - Use scenarios - Home aquarium or hydroponics: Monitor water level and temperature to prevent spills and ensure stable conditions. - Garden or rain barrel irrigation: Track water level and receive reminders to refill or adjust irrigation. - Basement or utility water tank: Monitor water level and ambient temperature to prevent overflow and maintain storage conditions.