The Orno DB-4/B wireless doorbell includes a mains-powered receiver and a push-button transmitter that operates without a battery when the button is pressed. The wireless connection allows installation without wiring between the transmitter and receiver. Choose from 36 melodies and 3 volume levels. The light indicator is useful when the sound is switched off.

The range is up to 150 m in open space, and the IP44-protected button can be installed at an entrance or gate. The system supports adding extra transmitters.

• Type: Wireless doorbell with mains-powered receiver
• Receiver power supply: 230 V AC, 50 Hz
• Transmitter power supply: Battery-free
• Range: Up to 150 m in open space
• Operating frequency: 433.92 MHz
• Melodies: 36
• Volume levels: 3
• Sound level: 80–95 dB
• Light indicator: Available
• Learning system: Available
• Additional transmitters: Supported
• Material: Plastic
• Colour: Black
• Receiver protection rating: IP20
• Transmitter protection rating: IP44
• Receiver dimensions: 72 × 120 × 67 mm
• Transmitter dimensions: 45 × 92 × 27.5 mm