Key benefits Read the display clearly in any lighting: the backlight on/off lets you turn illumination on when needed and save power when it’s not. Avoid unexpected downtime: the transmitter low battery reminder alerts you before batteries fail. Flexible time and temperature display: choose 12H or 24H time format and switch indoor temperature between °C and °F to match your preference. Reliable reminders and alerts: set alarms for events or schedules; buzzer sound can be turned on or off without affecting alarm operation. Multiple power options for different installations: receiver runs on 3 AAA batteries or USB Type-C power; transmitter operates on 6 AAA batteries or uses a built-in solar panel that automatically charges the rechargeable battery in sunlight. Main features and specifications Backlight on/off: toggleable display backlight for easy reading in any light condition. Time format: selectable 12-hour or 24-hour display. Default at power-on is 0:00 in 24-hour format. Transmitter low battery reminder: visible alert to indicate weak transmitter batteries. Alarm function: set time-based reminders. The default indicator when switched on is 0: Summer on/off (buzzer sound control): turn button sounds on or off; alarm mode is not affected by this setting. Indoor temperature display: choose Celsius or Fahrenheit; default is Celsius. Power supply: Receiver: 3 AAA batteries or Type-C power cable. Transmitter: 6 AAA batteries or integrated solar panel that automatically charges the rechargeable battery in sunlight. Measurements: temperature and water level detection and display. Why customers need this product Prevents surprises: battery reminders and multiple power options reduce the risk of losing monitoring capability. Fits varied environments: readable backlight, selectable units, and time formats adapt to home, work, or outdoor installations. Simple control over audible alerts: silence button sounds while keeping critical alarm functions active. Practical use scenarios Water storage and tanks: monitor water level and indoor temperature in pump rooms or utility closets; receive alarms when attention is needed. Basements, sump pits, and wells: keep an eye on water levels and temperature to avoid flooding or equipment issues; use solar-powered transmitter to minimize maintenance. Greenhouses and small indoor farms: track indoor temperature in °C or °F while monitoring water reservoirs; set alarms for scheduled maintenance or critical thresholds. Notes All functions and defaults are as described above. No additional size or material specifications are provided in the original product information.