1. Introduzione
Thank you for choosing the SENCOR SWS 4250 Weather Station. This device provides accurate indoor and outdoor temperature and humidity readings, along with a weather forecast based on atmospheric pressure changes. It also features a radio-controlled clock, date, and day of the week display. Please read this manual carefully before use to ensure proper operation and to maximize the lifespan of your device.
2. Contenuto della confezione
- SENCOR SWS 4250 Main Unit
- SWS TH4250 Wireless Outdoor Sensor (1 unit)
- DC 4.5 V / 150 mA Power Adapter
- Manuale dell'utente (questo documento)
3. Prodotto finitoview

Immagine 1: The SENCOR SWS 4250 Weather Station main unit (left) and the SWS TH4250 wireless outdoor sensor (right). The main unit features a color LCD display showing time, date, day of the week, weather forecast symbols, indoor temperature and humidity, and outdoor temperature and humidity. The outdoor sensor is a compact black unit with a small display showing temperature and channel.
4. Impostazione
4.1 Alimentazione dei dispositivi
- Sensore esterno: Open the battery compartment on the SWS TH4250 sensor. Insert 2 x 1.5 V AA batteries (not included), observing the correct polarity (+/-). Close the compartment.
- Unità principale: Insert 3 x 1.5 V AAA batteries (not included) into the battery compartment on the back of the main unit, observing the correct polarity. Alternatively, connect the provided DC 4.5 V / 150 mA power adapter to the main unit and a power outlet. Using the power adapter will ensure continuous backlight for the color LCD display.
4.2 Sincronizzazione iniziale
After powering both units, the main unit will automatically attempt to connect with the outdoor sensor. Ensure the sensor is within range (up to 30 meters outdoors). The outdoor temperature and humidity should appear on the main unit's display. If not, refer to the Troubleshooting section.
4.3 DCF77 Radio-Controlled Time
The main unit will automatically attempt to receive the DCF77 radio signal for accurate time and date synchronization. This process may take several minutes or hours depending on your location and environmental conditions. Ensure the unit is placed away from sources of interference. The time can also be set manually if the DCF77 signal is not available or desired.
4.4 Posizionamento
- Unità principale: Place the main unit indoors on a flat surface (for standing) or mount it on a wall. Choose a location where the display is easily visible and away from direct sunlight or heat sources that could affect indoor temperature readings.
- Sensore esterno: Mount the outdoor sensor in a sheltered location to protect it from direct rain and sunlight, which can affect accuracy. Ensure it is within the 30-meter transmission range of the main unit and that there are no major obstructions.
5. Istruzioni per l'uso
5.1 Fine displayview
The color LCD display shows the following information:
- Weather Forecast Symbols: Sunny, slightly cloudy, cloudy, rain.
- Ora digitale: 12/24 hour format selectable.
- Date and Day of the Week.
- Temperatura e umidità interna.
- Temperatura e umidità esterne.
- Memoria min/max: Records the minimum and maximum temperature and humidity values.
5.2 Impostazione di data e ora
If the DCF77 signal is not received or you wish to set the time manually:
- Press and hold the 'SET' button (location typically on the back or side of the unit) to enter time setting mode.
- Utilizzare i pulsanti '+' o '-' per regolare il valore lampeggiante (ad esempio, ora, minuto, anno, mese, giorno).
- Press 'SET' again to confirm the setting and move to the next parameter.
- Repeat until all settings are complete. The unit will exit setting mode automatically after a period of inactivity or by pressing 'SET' one last time.
5.3 Selezione dell'unità di temperatura
Press the '°C/°F' button (usually on the back or side) to switch between Celsius and Fahrenheit temperature display.
5.4 Min/Max Memory
Premere il pulsante 'MEM' per view the recorded minimum and maximum indoor/outdoor temperature and humidity values. Press 'MEM' again to cycle through min, max, and current readings. To clear the memory, press and hold the 'MEM' button while viewing the min/max values.
5.5 Funzione posticipa
If the unit has an alarm function, the 'SNOOZE' button (often combined with the backlight button) will temporarily silence the alarm for a set period.
5.6 Supporto multi-sensore
The SWS 4250 main unit supports up to 3 wireless outdoor sensors. If you have additional SWS TH4250 sensors (sold separately), you can add them by following the pairing instructions in their respective manuals. The main unit will cycle through the connected sensor channels or allow manual selection.
6. Manutenzione
- Pulizia: Clean the main unit and sensor with a soft, damp panno. Non usare detergenti abrasivi o solventi.
- Sostituzione della batteria: Sostituire le batterie sia nell'unità principale che nel sensore esterno quando sul display compare l'indicatore di batteria scarica. Assicurarsi che la polarità sia corretta.
- Magazzinaggio: If the device will not be used for an extended period, remove all batteries to prevent leakage.
- Condizioni ambientali: Avoid exposing the main unit to extreme temperatures, direct sunlight, or high humidity. The outdoor sensor is designed for outdoor use but should be protected from direct precipitation.
7. Risoluzione Dei Problemi
- Nessun display sull'unità principale:
- Check if the power adapter is securely connected or if the AAA batteries are inserted correctly and are not depleted. - Nessuna lettura della temperatura/umidità esterna:
- Ensure the outdoor sensor has fresh AA batteries and is within the 30-meter transmission range of the main unit.
- Check for obstructions between the main unit and the sensor.
- Try re-synchronizing the sensor by removing and reinserting its batteries, then pressing the 'CHANNEL' or 'SYNC' button on the main unit (if available). - Ora/data errate:
- Verify that the DCF77 signal reception icon is displayed. If not, try relocating the main unit to an area with better reception.
- Manually set the time and date as described in section 5.2. - Letture imprecise:
- Ensure both units are placed away from direct heat sources, cold drafts, or direct sunlight.
- Allow some time for the readings to stabilize after initial setup or relocation.
8. Specifiche
| Modello | SWS 4250 |
| Intervallo di temperatura interna | da 0°C a +50°C (da 32°F a 122°F) |
| Intervallo di temperatura esterna | da -20°C a +60°C (da -4°F a 140°F) |
| Intervallo di umidità (interno ed esterno) | 20% to 90% rF |
| Precisione della temperatura | ±1°C |
| Frequenza di trasmissione | 433 MHz |
| Gamma di trasmissione | Up to 30 m (outdoor, open area) |
| Alimentazione dell'unità principale | 3 x 1.5 V AAA batteries (not included) or DC 4.5 V / 150 mA adapter (included) |
| Potenza del sensore | 2 batterie AA da 1.5 V (non incluse) |
| Dimensioni dell'unità principale (L x A x P) | 173 x 125 x 22 mm (6.81 x 4.92 x 0.87 pollici) |
| Peso unità principale | 238 g (15.66 once) |
| Caratteristica speciale | Lightweight, Color LCD Display, Radio-controlled Time (DCF77) |
9. Garanzia e supporto
SENCOR products are manufactured to high-quality standards. For information regarding warranty terms and conditions, please refer to the warranty card included with your purchase or visit the official SENCOR website. For technical support or service inquiries, please contact SENCOR customer service through their official channels.





