Ritto 18754/20 knappmodul 4-knappar silver (1875420)

For apartment buildings and office complexes using the Ritto TwinBus system, the 18754/20 button module adds four clearly labelled call buttons to a Portier door station. Its silver anodized aluminium front is built to withstand daily use at entrances, while integrated LED illumination keeps names and buttons readable after dark.

Key specifications

• 4-button module for Ritto Portier door stations
• Silver anodized aluminium front panel
• LED illumination for buttons and nameplates
• 2-wire TwinBus connection
• IP44 protection against splashing water
• Operating temperature: -20°C to +50°C
• Module dimensions: 90 × 90 mm, installation depth approx. 25 mm

Why choose it

This module integrates seamlessly with existing Ritto TwinBus installations, offering a clean, modern look with durable materials. The illuminated nameplates and buttons ensure clear identification and ease of use for visitors at any time of day. Its IP44 rating makes it suitable for covered outdoor entrances.

Ideal use cases

• Multi-tenant residential buildings with up to four call buttons per module
• Office entrances requiring multiple direct-dial buttons
• Retrofitting or expanding existing Ritto Portier door stations
• Covered outdoor locations where weather resistance is needed

Good to know

The module is designed for flush or surface mounting on Ritto Portier door stations. It connects via the TwinBus 2-wire bus, simplifying wiring. Nameplate labels can be customised on-site. For larger installations, multiple button modules can be combined to increase the number of call buttons.