1. Introdución
The Extech 445703 is a Big Digit Hygro-Thermometer designed for indoor use. It provides simultaneous display of humidity and temperature, featuring large, easy-to-read digits. This device is suitable for monitoring environmental conditions in various indoor settings such as homes, offices, greenhouses, and baby rooms. It includes a Min/Max function to track extreme readings and comes complete with necessary accessories for immediate use.
2. Características
- Large LCD with 1-inch digits for clear visibility.
- Simultaneous display of relative humidity and ambient temperature.
- Measures humidity from 10% to 99% RH.
- Measures temperature from 14°F to 140°F (-10°C to 60°C).
- Accuracy: ±5% RH and ±1.8°F (±1°C).
- Minimum/Maximum (Min/Max) function with reset capability.
- Data Hold function to freeze current readings.
- Includes a built-in stand and a wall mounting bracket for versatile placement.
3. Contido do paquete
Verificar que todos os elementos estean presentes e en bo estado:
- Extech 445703 Big Digit Hygro-Thermometer
- Stand integrado
- Soporte de montaxe en parede
- One (1) AAA Battery
4. Configuración
4.1. Instalación da batería
- Localice a tapa do compartimento da batería na parte traseira da unidade.
- Deslice a tapa para abrir.
- Insert one (1) AAA battery, observing the correct polarity (+ and -) as indicated inside the compartment.
- Coloque a tapa do compartimento da batería de forma segura.
4.2 Colocación
- Uso do escritorio: Extend the integrated stand from the back of the unit to place it on a flat surface.
- Montaxe na parede: Use the provided wall mounting bracket and appropriate hardware (not included) to secure the unit to a wall. Ensure the chosen location allows for accurate environmental readings, away from direct sunlight, heat sources, or drafts.
5. Instrucións de funcionamento
5.1. Mostrarview
The large LCD simultaneously shows the current temperature (top display) and relative humidity (bottom display). The unit automatically begins measuring upon battery installation.
- Visualización da temperatura: Shows the current ambient temperature in either Fahrenheit (°F) or Celsius (°C).
- Visualización de humidade: Shows the current relative humidity in percentage (%).
5.2. Selección de unidades de temperatura
To switch between Fahrenheit (°F) and Celsius (°C), locate the small switch or button, typically on the back or side of the unit. Press or slide it to select the desired temperature unit.
5.3. Minimum/Maximum (Min/Max) Function
The Min/Max function allows you to view the highest and lowest temperature and humidity readings recorded since the last reset.
- Preme o MAX/MIN button once to display the maximum recorded temperature and humidity. The "MAX" indicator will appear on the display.
- Preme o MAX/MIN button a second time to display the minimum recorded temperature and humidity. The "MIN" indicator will appear on the display.
- Preme o MAX/MIN button a third time to return to the current temperature and humidity display.
5.4. Resetting Min/Max Readings
To clear the recorded Min/Max values and start a new recording cycle:
- Mentres viewing either the MAX or MIN readings, press and hold the RESET button for approximately 3 seconds. The display will briefly show all segments, then return to current readings, indicating the Min/Max memory has been cleared.
6. Mantemento
6.1. Substitución da batería
When the battery power is low, a low battery indicator will appear on the display. Replace the AAA battery as described in the "Battery Installation" section (4.1).
6.2. Limpeza
Limpar a c do contadorasing cun suave, damp cloth. Do not use abrasive cleaners or solvents. Ensure no moisture enters the sensor area or battery compartment.
7 Solución de problemas
- Sen pantalla ou pantalla tenue: Check battery polarity. Replace the AAA battery if it is low or depleted.
- Lecturas inexactas: Ensure the meter is placed in a stable environment, away from direct heat, cold, or strong air currents. Allow sufficient time (at least 30 minutes) for the meter to stabilize to the ambient conditions.
- Display Frozen: If the display appears frozen, the Data Hold function might be active. Press the appropriate button (if available, usually labeled "HOLD") to release it. If no such button, remove and reinsert the battery to reset the unit.
8. Especificacións
| Parámetro | Valor |
|---|---|
| Rango de humidade | 10 a 99% RH |
| Rango de temperatura | De -14 a 140 °C (10 a 60 °F) |
| Precisión da humidade | ± 5% RH |
| Precisión da temperatura | ± 1.8 ° F (± 1 ° C) |
| Mostrar | Large Digit LCD |
| Fonte de enerxía | 1 x batería AAA |
| Dimensións do produto | 3.9" de ancho x 4.3" de alto |
| Peso do elemento | 0.704 onzas (0.02 kg) |
| Opcións de montaxe | Stand, Wall Mount |
9. Garantía e soporte
The Extech 445703 Big Digit Indoor Humidity & Temperature Meter comes with a 1 ano de garantía desde a data de compra. Esta garantía cobre defectos de materiais e fabricación en condicións de uso normal.
For technical support, warranty claims, or service inquiries, please contact Extech customer service directly. Refer to the official Extech websitio web ou a embalaxe do produto para obter a información de contacto máis actualizada.
