1. Introduzione
Thank you for choosing the ELRO SA50M Wireless Magnetic Contact Sensor. This device is designed to enhance the security of your home or office by detecting the opening of doors or windows. It is fully compatible with ELRO HA41, HA51, and HA55 alarm systems. This manual provides detailed instructions for installation, operation, and maintenance to ensure optimal performance and reliability.
2. Prodotto finitoview
The ELRO SA50M consists of two main parts: a sensor unit and a magnetic contact. When these two parts are separated (e.g., when a door or window opens), the sensor triggers an alarm signal to your connected ELRO alarm system.
2.1 Contenuto della confezione
- 1x ELRO SA50M Wireless Magnetic Contact Sensor (Main Unit)
- 1x Magnetic Contact
- Mounting Screws and Adhesive Tape
- 1x Battery (CR2032, typically pre-installed or included)
- 1x Manuale utente (questo documento)
2.2 Caratteristiche principali
- Wireless operation for easy installation.
- Detects opening of doors and windows.
- Compatible with ELRO HA41, HA51, and HA55 alarm systems.
- Basso consumo energetico per una maggiore durata della batteria.
- Maximum wireless range of approximately 35 meters (in open air).
2.3 Componenti del prodotto

Figure 1: ELRO SA50M Wireless Magnetic Contact Sensor. This image shows the main sensor unit and the smaller magnetic contact, typically mounted on a door or window frame and the moving part, respectively.
3. Configurazione e installazione
3.1 Installazione della batteria
- Carefully open the main sensor unit's casing.
- Insert the CR2032 battery, ensuring correct polarity (+ and -).
- Chiudete il casing in modo sicuro.
- A small LED indicator may flash briefly to confirm power.
3.2 Pairing with the Alarm System
Before mounting, it is recommended to pair the sensor with your ELRO HA41, HA51, or HA55 alarm system.
- Put your ELRO alarm system into pairing mode (refer to your alarm system's manual for specific instructions).
- Activate the SA50M sensor by separating the main unit and the magnetic contact. This simulates an opening event.
- The alarm system should acknowledge the new sensor. Follow the alarm system's prompts to assign the sensor to a specific zone or name.
- Test the pairing by separating the sensor and magnet again. The alarm system should register the event.
3.3 Montaggio del sensore
Choose a suitable location on a door or window frame. Ensure the main sensor unit and the magnetic contact are aligned and within 1 cm of each other when the door/window is closed.
- Pulisci la superficie: Assicurarsi che la superficie di montaggio sia pulita, asciutta e liscia.
- Posizionamento:
- Montare il main sensor unit on the fixed part of the door/window frame.
- Montare il contatto magnetico on the moving part of the door/window.
- Allegato:
- Utilizzo del nastro adesivo: Peel off the protective backing from the adhesive tape and firmly press the sensor and magnet onto the desired positions. Hold for 30 seconds.
- Utilizzando le viti: Mark the screw holes on the mounting surface. Drill pilot holes if necessary. Secure the sensor and magnet using the provided screws.
- Allineamento del test: Open and close the door/window several times to ensure the sensor and magnet separate and come together correctly, triggering the alarm system as expected.
4. Funzionamento del sensore
The ELRO SA50M operates automatically once installed and paired with your alarm system. When the alarm system is armed:
- If the door or window where the sensor is installed opens, the magnetic contact separates from the main unit.
- The sensor immediately transmits a signal to your ELRO alarm system.
- The alarm system will then trigger its programmed response (e.g., siren, notification).
When the alarm system is disarmed, the sensor will still detect openings but will not trigger an alarm, though it may log the event depending on your alarm system's settings.
5. Manutenzione
5.1 Sostituzione della batteria
The sensor is powered by a CR2032 lithium coin cell battery. When the battery is low, your alarm system may indicate a low battery warning for the specific sensor. Replace the battery as follows:
- Carefully open the main sensor unit's casing.
- Rimuovere la vecchia batteria CR2032.
- Inserire una nuova batteria CR2032, rispettando la polarità corretta.
- Chiudete il casing in modo sicuro.
- Test the sensor to ensure it is functioning correctly and the low battery warning has cleared on your alarm system.
Nota: Smaltire le batterie usate in modo responsabile secondo le normative locali.
5.2 Pulizia
Wipe the sensor and magnet with a soft, dry cloth. Do not use liquid cleaners or abrasive materials, as these can damage the device.
5.3 Test regolari
It is recommended to test your magnetic contact sensors periodically (e.g., monthly) to ensure they are functioning correctly. Arm your alarm system and then open the door/window where the sensor is installed to verify that the alarm triggers.
6. Risoluzione Dei Problemi
Il sensore non attiva l'allarme
- Controllare la batteria: Assicurarsi che la batteria sia installata correttamente e non sia scarica. Sostituirla se necessario.
- Controllare l'allineamento: Verify that the main sensor unit and magnetic contact are aligned and within 1 cm when the door/window is closed.
- Controlla l'associazione: Ensure the sensor is properly paired with your ELRO alarm system. Re-pair if needed (refer to Section 3.2).
- Interferenza wireless: Large metal objects or other wireless devices nearby can cause interference. Try repositioning the sensor or the alarm system if possible.
- Distanza: The sensor might be too far from the alarm system. The maximum range is approximately 35 meters in open air; walls and obstacles reduce this range significantly.
Falsi allarmi
- Montaggio allentato: Ensure both parts of the sensor are securely mounted and do not shift when the door/window is closed.
- Vibrazioni: Strong vibrations might cause the sensor and magnet to momentarily separate. Re-mount more securely or choose a different location.
- Fattori ambientali: Extreme temperature changes or humidity can sometimes affect electronics.
7. Specifiche
| Modello: | ELRO SA50M |
| Compatibilità: | ELRO HA41, HA51, HA55 Alarm Systems |
| Frequenza wireless: | (Not specified in input, assume standard for ELRO systems) |
| Portata wireless: | Fino a 35 metri (all'aria aperta) |
| Tipo di batteria: | Batteria a bottone al litio CR2032 |
| Temperatura di esercizio: | (Not specified in input, assume standard indoor range) |
8. Garanzia
ELRO products are covered by a manufacturer's warranty. Please refer to the warranty card included with your purchase or visit the official ELRO websito per termini e condizioni di garanzia dettagliati. Conservare la prova d'acquisto per eventuali reclami in garanzia.
9. Supporto
If you encounter any issues or have questions regarding your ELRO SA50M Wireless Magnetic Contact Sensor that are not covered in this manual, please contact ELRO customer support. Contact details can typically be found on the ELRO websito o sulla confezione del prodotto.





