Campanello, 1 trasmettitore, 3 ricevitori, autoalimentato, impermeabile, senza batterie, portata 150 metri, indicatore LED, connessione 300 metri, 5 livelli di volume 60

【300m/1000ft Wireless Signal Range】: Strong penetration, with a reception range of up to 300m/1000ft, suitable for various locations such as homes, offices, apartments, villas, hospitals, and warehouses. It can also be used as an assistive device for the elderly or patients. 【Waterproof Design】: Prevents rainwater ingress, effectively extending product lifespan. 【60 Pleasant Ringtones and 5-Level Volume Adjustment】: 60 different ringtones are available. 5-level volume adjustment meets your various needs. 【Anti-Interference, No Crosstalk】: Utilizes digital circuit design; multiple devices operating simultaneously will not produce crosstalk, effectively preventing noise caused by neighboring interference. 【Super Easy Installation】: The button has two installation methods: adhesive tape or screws and expansion bolts. Double-sided tape and mounting screws are included in the package. Specifications: 1. Easy installation: Plug and play; 2. Wireless doorbell, usable both indoors and outdoors; 3. IP44 waterproof doorbell kit, plug and play; 4. Effective range up to 150 meters in open environments; 5. 60 selectable ringtones; 6. LED indicator button/transmitter; 7. Button-type transmitter and pluggable receiver; 8. Five-level volume adjustment; 9. Power supply: 110-220V; 10. Volume: 0-110 dB; 11. Self-powered, no batteries required; 12. Receiver dimensions: approx. 70 mm * 42 mm * 20 mm; 13. Transmitter dimensions: approx. 92 mm * 62 mm * 32 mm. How to pair the signal? Pairing method: Press and hold the volume button on the receiver for about 5 seconds (the indicator light will illuminate). Release the volume button and immediately press the button on the transmitter again. Pairing successful. How to change and lock the ringtone? Before plugging the receiver into a power outlet, press and hold the volume button on the receiver. Release the volume button, then press the music button to set the desired ringtone. Press and hold the volume button again until the indicator light illuminates, then immediately press the transmitter button twice to lock the ringtone.