The Orno Opera DC is a wireless battery-powered doorbell that installs without any cable connection. The transmitter mounts at the door and the receiver plugs in indoors, communicating over the 433.92 MHz band with a maximum range of 100 m.

A built-in learning system automatically pairs additional transmitters, allowing multiple doorbells or call buttons to share one receiver — useful as a household doorbell or as a call device for elderly or mobility-limited users. The receiver offers 36 ringtones, optical indication, and adjustable volume from 50 to 90 dB.

Key Features

• Fully wireless operation — no cable runs required
• Maximum transmission range of 100 m between transmitter and receiver
• Operating frequency: 433.92 MHz
• Learning system automatically pairs additional transmitters
• Receiver with 36 selectable ringtones and optical indication
• Adjustable doorbell volume from 50 to 90 dB
• IP44-rated transmitter for outdoor door-side mounting
• Black colour

Product Benefits

• Simple installation without wiring through walls or doorframes
• Expandable with extra transmitters for multiple entry points
• Wide volume range from 50 to 90 dB suits quiet homes and noisy environments
• Optical indication assists hearing-impaired users
• IP44 transmitter withstands outdoor moisture exposure

Technical Specifications

• Wireless: Yes
• Max. Transmission Range: 100 m
• Frequency: 433.92 MHz
• Expandable Transmitters: Yes (learning system)
• Colour: Black
• Transmitter Power: 12V, 1 x A23 battery (included)
• Transmitter IP Rating: IP44
• Transmitter Dimensions: 40 x 86 x 20 mm (W x H x D)
• Transmitter Max. Power: <10 mW
• Receiver Power: 4.5V, 3 x AA batteries (not included)
• Ringtones: 36
• Volume: 50-90 dB (adjustable)
• Optical Indication: Yes
• Receiver Dimensions: 88 x 86 x 34 mm (W x H x D)

Why You'll Love It

• Quick setup makes it ideal for renters or homes where wiring is impractical
• Expandable receiver supports multi-door and multi-room setups
• Loud, configurable chime tones suit a wide range of users
• Package includes 1x Orno Opera DC Wireless Battery Doorbell