Hygro Thermometer ( HTC – 288-CTH )

Description

The HTC 288‑CTH Digital Thermo‑Hygrometer with Clock is a stylish and functional indoor environmental monitor that combines precision measurement with practical features like a digital calendar and alarm. Delivering temperature, humidity, and time data clearly via its large three-line LCD display, this device is ideal for homes, offices, greenhouses, and light commercial environments where comfort and safety matter.

Designed with broad measurement ranges, the 288‑CTH accurately senses temperature from –50 °C to +70 °C (–58 °F to +158 °F) and relative humidity from 10% to 99% RH. Temperature is displayed with a fine 0.1 °C resolution and measured to ±1.0 °C (±1.8 °F) in the –50 to +70 °C range. Humidity accuracy is ±5% RH between 35% and 75%, and ±10% RH outside that window. These specifications ensure reliable environmental monitoring across a wide array of indoor conditions

The meter’s large three-line LCD display concurrently shows current time, temperature, and humidity, enhancing readability and eliminating the need to toggle between screens. A built-in calendar and alarm clock system supports both 12- and 24-hour time formats, enabling seamless daily timekeeping alongside environmental monitoring. Users can also access historical data for both temperature and humidity with the MAX/MIN memory functionality, ideal for observing fluctuations over time.

Complementing its core features is the intuitive Comfort Index indicator, which categorizes current conditions as “COMFORT”, “WET”, or “DRY” depending on the relative temperature and humidity levels. This user-friendly display instantly communicates whether indoor conditions fall within comfortable, damp, or overly dry ranges, making it an excellent tool for residential and plant care environments

The device also supports temperature display in either °C or °F at the touch of a button, offering flexibility for different user preferences or regional standards. Its sleek, compact design—measuring approximately 105 × 97 × 22 mm and weighing around 170 g—makes it suitable for both desktop placement and wall mounting. The unit is powered by a single AAA 1.5 V battery, and includes a low battery indicator to ensure uninterrupted operation.

Setup is intuitive:

• Press MODE/SET to adjust clock, alarm, and calendar settings

• Use MAX/MIN/CLEAR to view or reset the highest and lowest recorded temperature and humidity readings

• Switch between indoor/outdoor display or temperature units with dedicated buttons
  This ease of use makes the 288‑CTH accessible for individuals of all technical levels htcinstrumentYouTube+12Imimg+12htcinstrument+12.

Engineered for indoor environmental monitoring—not industrial use—the 288‑CTH is ideal for applications such as home comfort audits, greenhouse control, nursery climate monitoring, museum archive management, and general HVAC awareness. It helps maintain optimal storage conditions, promote occupant comfort, and support plant welfare in humidity-sensitive settings.

The combination of clear data display, environmental comfort cues, timekeeping, and user-friendly functions makes this device more than just a meter—it’s a daily environmental companion. In summary, the HTC 288‑CTH offers:

• Broad temperature (–50 °C to +70 °C) and humidity (10–99% RH) measurement

• Accurate readings (±1 °C; ±5% RH / ±10% RH) with 0.1-unit resolution

• Simultaneous display of time, temperature, and humidity on a large LCD screen

• Alarm clock and calendar with 12/24‑hour format

• MAX/MIN memory for tracking environmental extremes

• Comfort status display (COMFORT, WET, DRY) for instant air quality evaluation

• Compact, lightweight design with AAA battery power

Whether you are looking to improve home comfort, manage greenhouse environments, or simply monitor indoor air conditions effectively, the HTC 288‑CTH Digital Thermo‑Hygrometer delivers ease of use, precision, and functional value.