femometer DET-306
femometer Infrared Forehead Thermometer DET-306 User Manual
Non-Contact Digital Thermometer for Infants and Adults
1. Introducción
Thank you for choosing the femometer Infrared Forehead Thermometer DET-306. This device is designed for safe and accurate temperature measurement of the human body, objects, and ambient room temperature without contact. Please read this manual thoroughly before use to ensure proper operation and to maintain the device's accuracy and longevity.
Información de seguridad importante:
- No intente desmontar ni reparar el termómetro.
- Mantenga el dispositivo alejado de la luz solar directa, el polvo y las temperaturas extremas.
- Ensure the measurement area (forehead) is clean and dry for accurate readings.
- This thermometer is intended for household use. Consult a medical professional for any health concerns.
2. Producto terminadoview
2.1 Componentes del dispositivo

Image: The femometer Infrared Forehead Thermometer DET-306 shown with its retail packaging, highlighting its non-contact feature, 1-second instant reading, and LCD backlight.

Image: A detailed diagram of the thermometer's LCD display and control buttons, including the Start Button, Forehead/Object Mode Button, and Power Button. It also illustrates the color-coded fever alarm system (Green, Orange, Red) and various display icons.
2.2 Características principales
- Medición 3 en 1: Measures body, object, and room temperature.
- Non-Contact: Safe and hygienic measurement from a distance.
- Instant & Accurate Readings: Provides results in 1 second with high precision.
- Alarma de fiebre: Color-coded LCD display (Green, Orange, Red) indicates temperature status.
- Recuperación de la memoria: Stores up to 10 previous readings with exact time.
- Pantalla LCD retroiluminada: Clear readings day or night.
- Unidades conmutables: Cambie fácilmente entre Celsius (°C) y Fahrenheit (°F).
- Cierre automático: Conserva la vida útil de la batería.

Image: An infographic summarizing the key features of the femometer infrared thermometer, including Forehead Mode, Object Mode, Instant Measurement, Auto Shut-off, Fever Alarm, °C/°F Switchable, Time Setting, 10 Memory Recall, LCD Backlit Display, and Beep function.
3. Configuración
3.1 Instalación de la batería
The femometer DET-306 thermometer requires 2 AAA batteries (included). To install or replace batteries:
- Localice la tapa del compartimiento de la batería en la parte posterior del dispositivo.
- Deslice la tapa para abrirla.
- Inserte dos pilas AAA, asegurándose de la polaridad correcta (+ y -) como se indica dentro del compartimento.
- Cierre bien la tapa del compartimento de la batería.
The device will emit a short beep and the display will show all segments briefly, indicating successful battery installation.
4. Instrucciones de funcionamiento
4.1 Encendido/Apagado
- Encender: Presiona el boton de poder (E/S). The display will show all segments, then the last measurement, and finally enter standby mode.
- Apagar: The device will automatically shut off after approximately 30 seconds of inactivity to conserve battery. You can also manually turn it off by pressing and holding the Power Button for a few seconds.
4.2 Modos de medición
The thermometer has two main measurement modes: Forehead Mode (for body temperature) and Object Mode (for surface/room temperature).

Image: A baby being measured with the non-contact infrared thermometer, illustrating its ease of use for infants. Key features like 10 memory readings, 1-second instant reading, and temperature alarm are highlighted.

Image: Demonstrates the thermometer in use for Forehead Mode (measuring a person's temperature) and Object Mode (measuring food and room temperature), showcasing su versatilidad.
To switch between modes, press the Forehead/Object Button (person/house icon). The corresponding icon will appear on the LCD display.
4.3 Realización de una medición

Image: A visual guide demonstrating the three steps to measure temperature: 1. Power on and select mode. 2. Point thermometer 2-3 cm from the forehead and press START. 3. Read the temperature after a short beep.
- Ensure the thermometer is in the desired mode (Forehead or Object).
- Position the thermometer 1-3 cm (0.4-1.2 inches) away from the center of the forehead (for body temperature) or the object/surface.
- Presione el COMENZAR botón.
- The measurement will be completed after a short beep, and the temperature reading will be displayed on the LCD screen.

Image: Illustrates the recommended measurement distance of 1-3 cm from the forehead for accurate readings, showing a child and adult using the thermometer.
4.4 Cambio de unidades de temperatura (°C/°F)
Para cambiar entre Celsius (°C) y Fahrenheit (°F):
- Ensure the thermometer is in the OFF state.
- Mantenga pulsado el COMENZAR botón durante 3-5 segundos.
- La pantalla mostrará la unidad actual y luego cambiará a la otra. Suelte el botón cuando aparezca la unidad deseada.

Image: Shows how to switch the temperature unit between Celsius (°C) and Fahrenheit (°F) by pressing the start button, with examples of both displays.
4.5 Fever Alarm Interpretation
The thermometer's LCD backlight changes color to indicate temperature status:
- Verde: Normal body temperature (T ≤ 37.3°C / 99.1°F).
- Naranja: Low-grade fever (37.3°C < T < 37.7°C / 99.1°F < T < 99.9°F).
- Rojo: High fever (T ≥ 37.7°C / 99.9°F).

Image: Illustrates the three-color backlight system for temperature alerts: Green for normal, Orange for elevated, and Red for high temperature, with corresponding temperature ranges.
4.6 Recuperación de memoria
The thermometer automatically stores the last 10 temperature readings with the exact time. To access memory recall:
- Enciende el termómetro.
- Press the Forehead/Object Button (person/house icon) repeatedly to cycle through the stored readings.
- Each press will display the next stored reading, starting from the most recent.

Image: Shows the thermometer being used in a dark room, demonstrating its backlit LCD display for clear readings at night without disturbing others.
5. Mantenimiento
5.1 Limpieza
- Limpie el cuerpo del termómetro con un paño suave y seco.
- For the probe, gently clean with an alcohol swab (70% isopropyl alcohol) or a cotton swab moistened with alcohol. Allow it to air dry completely before use.
- No sumerja el termómetro en agua ni en ninguna solución de limpieza.
5.2 Almacenamiento
- Guarde el termómetro en un lugar fresco y seco, alejado de la luz solar directa y de temperaturas extremas.
- Si no se utiliza durante un período prolongado, retire las pilas para evitar fugas.
6. Solución de problemas
| Problema | Posible causa | Solución |
|---|---|---|
| No hay pantalla/El dispositivo no se enciende | Baterías agotadas, instalación incorrecta de baterías. | Reemplace las baterías, asegúrese de la polaridad correcta. |
| Lecturas inexactas | Incorrect measurement distance, dirty probe, environmental factors (drafts, direct sunlight), recent activity (eating, exercising). | Ensure 1-3 cm distance, clean probe, measure in stable environment, wait 30 minutes after activity. |
| La pantalla muestra 'Lo' o 'Hi' | La temperatura está fuera del rango medible. | Ensure measurement is within specified operating range (e.g., 32°C-42.9°C for body). |
| La pantalla muestra 'Err' | Error o mal funcionamiento del sistema. | Remove and reinsert batteries. If error persists, contact customer support. |
7. Especificaciones
- Modelo: DET-306
- Rango de medición:
- Body: 32.0°C – 42.9°C (89.6°F – 109.2°F)
- Object: 0°C – 100°C (32°F – 212°F)
- Exactitud: ±0.2°C (±0.4°F) for body temperature within 35.0°C – 42.0°C (95.0°F – 107.6°F)
- Distancia de medición: 1-3 centímetros
- Mostrar: LCD con luz de fondo
- Memoria: 10 lecturas
- Fuente de energía: 2 x AAA batteries (DC 3V)
- Cierre automático: Aprox. 30 segundos
- Dimensiones: 15 x 4 x 4 cm
- Peso: 124 gramos (con pilas)
- Material: Plástico
- Componentes incluidos: 1 Thermometer, 2 AAA Batteries
8. Garantía y soporte
femometer is committed to providing high-quality products and excellent customer service. We offer many years of friendly customer service for our products.
If you have any questions, concerns, or require assistance with your femometer Infrared Forehead Thermometer DET-306, please do not hesitate to contact our customer support team. Refer to the product packaging or the official femometer websitio para detalles de contacto.

Image: The official femometer brand logo.
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