Aqara D1 No Neutral 1Key

The Aqara D1 no-neutral single-key switch is a wired Zigbee wall switch for controlling one lighting circuit where no neutral conductor is available at the switch box. The single-gang no-neutral D1 is commonly identified as model QBKG21LM.

The switch communicates through Zigbee, so remote control, app access and automations require a compatible Zigbee gateway. The product information for this exact no-neutral variant identifies Mi Home support. Region and gateway support can vary across Aqara and Xiaomi ecosystems, so the intended hub should be checked before installation.

Unlike the wireless D1 remote, this version is installed in the mains circuit and directly controls the connected load. Because it is specifically the no-neutral design, wiring requirements differ from D1 models that use both live and neutral conductors.

For installation, follow local electrical rules and the wiring diagram for the exact switch version. Do not substitute specifications from the neutral-wire D1 models, since their electrical design and supported loads can differ.

Pairing and automation should be checked with the intended Zigbee gateway before final installation. For wired products, smart-home connectivity does not change the electrical requirements: the correct neutral/no-neutral version, circuit arrangement and safe installation method remain essential. App features can vary by regional firmware and gateway generation, so choose the physical wiring version first and then confirm ecosystem support.

After installation, the physical keys continue to provide local control while the Zigbee connection adds app and automation functions through the gateway. This combination is useful where manual operation must remain straightforward even if the network is temporarily unavailable. Keep the exact wiring diagram with the installation records so that future maintenance does not confuse neutral and no-neutral versions that share a similar faceplate.