Maze-Karlton 2-Tone 230V Wired Doorbell White – Built-In Transformer, 80 dB & IP20

The Maze-Karlton 2-tone doorbell is an electromechanical indoor chime unit designed for wired 230 V installations in homes, apartments, and commercial premises. The built-in transformer steps the mains voltage down to a safe 8–12 V at the doorbell push-button, eliminating the need for an external transformer unit.

The unit produces a classic two-tone Ding-Dong sound at 80 dB and mounts flush to the surface using standard surface-mount fixings. No loudness adjustment is required as the output is fixed at an audible indoor level.

Key Features

• Electromechanical two-tone (Ding-Dong) sound at 80 dB
• Direct 230 V mains connection — no external transformer needed
• Built-in 8–12 V transformer for safe push-button voltage
• Wired connection type
• Surface-mount installation
• IP20 protection rating
• White finish

Product Benefits

• The built-in transformer simplifies wiring — one fewer component to source and install compared to transformer-less chime units
• Direct 230 V connection works with standard domestic ring wiring without any voltage converter
• IP20 protection is appropriate for covered indoor locations such as hallways and entrance lobbies
• The fixed 80 dB output is sufficient to be heard clearly in a typical residential interior without adjustment

Technical Specifications

• Type: Electromechanical
• Sound: 2 tones (Ding-Dong)
• Volume: 80 dB
• Nominal Voltage: 230 V~, 50 Hz
• Transformer Output: 8–12 V (built-in)
• Connection Type: Wired
• Installation: Surface mounting
• Protection Degree: IP20
• Loudness Control: No
• Colour: White
• Dimensions: 17.0 x 10.6 x 5.0 cm (H x W x D)

Why You'll Love It

• The single-unit design with integrated transformer keeps the installation tidy — only the doorbell body and push-button are visible
• Surface mounting requires no recessing into the wall, making installation fast and reversible
• The classic Ding-Dong tone is immediately recognisable and appropriate for residential and light commercial settings
• The white finish blends with the majority of interior wall colours and door surrounds