Legrand · Living Now Series

K4001C

Active
CE

Bticino Living Now Connected Switch

Legrand Living Now Series Introduced circa 2021

Bticino Living Now connected smart switch — Italian design.

Common Applications

Premium Italian smart wall switch from Legrands Bticino brand. Known for design-forward European interiors. Zigbee connected with optional Matter bridge. Available in white, black, sand, and custom finishes. The switch that architects specify for high-end European residential projects.

Openness & Hackability

Zigbee2MQTT Compatible

Zigbee 3.0 — works with Zigbee2MQTT. Bticino gateway optional. Home Assistant integration available. Matter support via Bticino bridge.

Specifications

Certifications
CE
Color
White/Black/Sand/Custom
Smart Home Integrations
Bticino App, Apple HomeKit (via bridge), Home Assistant
Mounting Type
Italian/European wall box
Protocol
Zigbee 3.0

Installation Quick Reference

Panel cutout: 22mm. Insert from the front of the panel, secure with mounting nut from behind (tighten to 2-3 Nm).

Contact block: Snap or screw the contact block onto the rear of the button body. Ensure the contact block orientation matches the wiring diagram — NO terminals are usually marked.

Wiring: Use 0.5-2.5mm² stranded wire with ferrules. Tighten screw terminals to 0.8 Nm. Test the button function before energizing the circuit.

Dimensions

Troubleshooting

Button doesn't respond when pressed

Check the contact block first — it's the most common failure point. Test continuity across the NO or NC terminals with a multimeter. If no click is felt, the return spring in the head may be broken.

Works intermittently

Contact block contacts are pitted or burned. Replace the contact block — don't try to file the contacts. Check if the rated cycle count has been exceeded.

Button feels mushy or doesn't click

The spring return mechanism in the button head is worn. Replace the head. The contact block can usually be reused if it tests OK.

Where to Buy

Price range

$49.61 — $167.45

across 2 distributors

Quick Specs

Certifications
CE
Color
White/Black/Sand/Custom
Smart Home Integrations
Bticino App, Apple HomeKit (via bridge), Home Assistant
Mounting Type
Italian/European wall box
Protocol
Zigbee 3.0

What People Are Saying

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“Zigbee 3.0 — works with Zigbee2MQTT. Bticino gateway optional. Home Assistant integration available. Matter support via Bticino bridge.”

Reddit r/homeassistant 8 upvotes View thread →