Extech 445702 Hygro-Thermometer Clock
The Extech 445702 is a triple-display instrument combining a clock, thermometer, and hygrometer. It shows time (12/24 h mode), ambient temperature, and relative humidity simultaneously. It includes Max/Min memory, alarm clock functionality, and swap-able °C/°F mode. The unit can be wall-mounted or used on a desk via a fold-out stand, making it handy for indoor environmental monitoring in homes, labs, or offices.
Description
The 445702 features three LCD segments: top for time, middle for temperature, and bottom for humidity. You can choose 12- or 24-hour display (depending on °F or °C mode). The temperature range is –10 °C to 60 °C (14–140 °F), and humidity measurement spans 10% to 85% RH. The instrument tracks maximum and minimum values for both temperature and humidity, which are viewable via a dedicated button and can be reset. A rear dial allows switching between °C and °F, which also toggles the clock mode. It includes an alarm clock with on/off control, and when the set time is reached, a buzzer sounds for one minute. The 445702 can rest on a desk with its tilt stand or be hung on a wall using the mounting bracket. It runs on a single AAA battery and displays a low-battery indicator when replacement is needed.
Features
- Triple LCD display: time, temperature, and relative humidity
- Clock mode: switchable 12-hour (°F mode) or 24-hour (°C mode)
- Temperature range: –10 °C to +60 °C (14 to 140 °F)
- Humidity range: 10% to 85% RH
- Accuracy: ±1 °C (±1.8 °F) for temperature, ±6% RH (within mid-range)
- Max/Min memory for temperature and humidity, with reset
- Alarm clock with hour and minute setting and audible buzzer
- °C/°F selectable via rear toggle switch
- Wall mountable or desk use via fold-out tilt stand
- Low battery indicator and compact size (approx. 109 × 71 × 20 mm)
Includes
- Built-in tilt stand
- Wall mounting bracket
- AAA battery
