Aqara Single Switch Module T1 (No Neutral) vs Shelly 1 Gen4

The Shelly 1 Gen4 is better overall thanks to a 3-year warranty, more connectivity options (Wi-Fi 6, Bluetooth, Zigbee and Matter), dry-contact mode and a Zigbee router role. The Aqara wins only if you lack a neutral wire, since the Shelly 1 Gen4 requires one, or if you want the cheaper option with confirmed power-off memory.

The neutral requirement. The Aqara is built to run without a neutral wire, while the Shelly 1 Gen4 needs one at the box. Beyond that, the Shelly carries more radios (adding Wi-Fi, Bluetooth and Matter to Zigbee) and dry-contact mode, whereas the Aqara is a Zigbee-only module that needs an Aqara hub.

The Shelly 1 Gen4 does. It combines Wi-Fi 6, Bluetooth 5.0, Zigbee and Matter in one unit and can run over whichever protocol suits your setup, plus it works as a Zigbee router. The Aqara Single Switch Module T1 (No Neutral) is Zigbee-only and depends on an Aqara hub, though it does still reach Matter through that hub.

Only the Aqara Single Switch Module T1 (No Neutral). It is designed for switch boxes that lack a neutral, which is a common obstacle in older wiring. The Shelly 1 Gen4 requires a neutral, so check your box before choosing it.

Buy it if your wall box has no neutral wire, you run a Zigbee or Aqara ecosystem with HomeKit, and you want the more affordable relay with confirmed power-off memory. It is a straightforward choice for retrofitting lights where a neutral is not available.

Buy the Shelly 1 Gen4 if your box has a neutral and you want protocol flexibility across Wi-Fi, Bluetooth, Zigbee and Matter, dry-contact triggering for garage doors and pumps, a Zigbee router to extend your mesh, and the reassurance of a 3-year warranty.