Description
The HTC-2 is a compact digital thermo-hygrometer designed for simultaneous indoor and outdoor temperature monitoring, with a large LCD that also displays indoor humidity and time. It is commonly used in homes, offices, greenhouses, wine cellars, and incubators where awareness of both indoor comfort and outdoor conditions is useful .
The device is housed in a plastic enclosure measuring approximately 100 × 110 × 20mm, with a large multi-function LCD for easy reading . It is powered by a single AAA battery and can be placed on a desk using the fold-out stand or hung on a wall via the rear hook . The 1.5-meter outdoor temperature probe connects via a wired cable, allowing the sensor to be placed outside a window or in a different room while the display remains indoors .
Beyond basic thermo-hygrometer functions, the HTC-2 includes a clock, daily alarm, hourly chime, calendar, and min/max memory for temperature and humidity . It supports °C/°F switching and 12/24-hour time format .
Critical limitations: This is a budget consumer-grade device, not a precision instrument. Supplier specifications claim ±1°C accuracy, but user reviews of the HTC family report variable quality control and occasional significant deviations . The humidity sensor is particularly prone to drift in low-cost devices. The outdoor probe measures temperature only—there is no outdoor humidity sensing . It is not a data-logging device and cannot connect to microcontrollers.
Features
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Dual Temperature Display: Shows indoor and outdoor temperatures simultaneously on the LCD .
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Indoor Humidity Measurement: Displays indoor relative humidity (10–99% RH) .
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1.5-Meter Outdoor Probe: Wired external temperature sensor for outdoor or remote monitoring .
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Min/Max Memory: Records highest and lowest temperature/humidity readings since last reset .
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Clock, Alarm & Calendar: 12/24-hour clock, daily alarm, hourly chime, and month/date display .
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°C/°F Switchable: Toggle between Celsius and Fahrenheit .
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Desk or Wall Mount: Fold-out stand for tabletop use; rear hook for wall hanging .
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Large LCD Display: Clear, multi-function screen for easy reading at a distance .
Technical Specifications
| Parameter | Specification (most commonly cited) |
|---|---|
| Model | HTC-2 |
| Indoor Temperature Range | -10°C to +50°C |
| Outdoor Temperature Range | -50°C to +70°C |
| Temperature Accuracy | ±1°C |
| Temperature Resolution | 0.1°C |
| Humidity Range | 10% to 99% RH |
| Humidity Accuracy | ±5% RH |
| Humidity Resolution | 1% RH |
| Power Supply | 1× AAA 1.5V (included varies) |
| Outdoor Probe Cable | Approx. 1.5 meters |
| Dimensions | Approx. 100 × 110 × 20mm |
Reviews
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