In/Out Hygro Thermometer ( HTC – 288-ATH )

Description

The HTC 288‑ATH Digital Thermo‑Hygrometer is a stylish and highly functional indoor‑outdoor environmental monitor designed to display temperature, humidity, and time simultaneously on a large three‑line LCD display. Ideal for homes, offices, greenhouses, and light industrial settings, it combines precision sensing with intuitive interfaces to deliver a seamless user experience.

Built for indoor and outdoor monitoring, the 288‑ATH accurately measures temperature from –50 °C to +70 °C (–58 °F to +158 °F) with a resolution of 0.1 °C/°F and an accuracy of ±1.0 °C (±1.8 °F) across 0–40 °C or ±1% overall. Humidity readings span 10% to 99% RH, offering accuracy of ±3% RH between 50–80%, and up to ±5% RH outside that range.

What sets the 288‑ATH apart is its environment comfort indicator, which visually classifies current conditions as “COMFORT,” “WET,” or “DRY” based on combined temperature and humidity levels—making it perfect for real‑time comfort assessment.

With simultaneous display of time, temperature, and humidity, the device eliminates multiple screens, allowing quick environmental checks at a glance. The built‑in calendar with alarm clock, supporting both 12‑hour and 24‑hour formats, adds further convenience to daily use.

The 288‑ATH enables users to switch easily between Celsius and Fahrenheit readings and includes MAX/MIN memory for both temperature and humidity. This feature is essential for tracking environmental variations over time, making it ideal for monitoring changing conditions across days or weeks.

For outdoor measurements, the 288‑ATH includes a 3‑meter sensor cable, offering flexibility in placing the external remote sensor, while the main unit remains inside. This cable makes temperature and humidity measurements possible in enclosed environments like greenhouses, server rooms, balconies, or cold storage units.

Portable and lightweight, the device measures approximately 105 × 97 × 22 mm and weighs about 170 g, making wall‑mounting or desktop placement effortless. It runs on a single 1.5 V AAA battery, and includes a low battery indicator to ensure uninterrupted operation.

Its user interface is clean and intuitive. Adjustable buttons allow users to toggle between indoor and outdoor displays, switch temperature units, view or clear MAX/MIN data, and set the calendar or alarm. This simplicity makes the device suitable for both technically savvy users and casual environments.

Engineered to capture a broad range of conditions, the 288‑ATH is well-suited for scenarios that require precise monitoring of temperature and humidity—for example, in home comfort zones, nursery care, archive preservation, warehouse storage, or greenhouse environments. Its accurate sensors, comfort index readouts, and clock‑alarm integration support climate awareness with minimal effort.

Key specifications:

• Temperature range: –50°C to +70°C (–58°F to +158°F), ±1.0 °C accuracy, 0.1° resolution

• Humidity range: 10–99% RH, ±3% (50–80%), ±5% outside, 0.1% RH resolution

• Comfort status: COMFORT, WET, DRY based on combined conditions

• Display: Large three‑line LCD showing time, temp, humidity

• Clock: Calendar with alarm, 12/24-hour mode support

• Memory: MAX/MIN for both parameters

• Outdoor sensor: 3 m cable for external reading

• Power: AAA battery, low battery alert

• Size: 105 × 97 × 22 mm, ~170 g

This instrument combines essential environmental monitoring functions with ergonomic features that bring both convenience and accuracy. In short, the HTC 288‑ATH Hygro‑Thermometer is a dependable solution delivering temperature, humidity, and clock display, along with comfort status indication and outdoor sensing capability. Its compact form factor, comprehensive features, and ease of use make it ideal for residential, commercial, and horticulture applications requiring accurate and accessible climate data.