| Feature | Aqara Single Switch Module T1 (No Neutral) | Shelly 1PM Gen4 | Winner |
|---|---|---|---|
| Safety | Overheating protection | None | Aqara Single Switch Module T1 (No Neutral) |
| Connectivity | Zigbee | Bluetooth, Zigbee | Shelly 1PM Gen4 |
| Energy Monitoring | NO | YES | Shelly 1PM Gen4 |
| Power Off Memory | YES | NO | Aqara Single Switch Module T1 (No Neutral) |
| Dry Contact Mode | NO | YES | Shelly 1PM Gen4 |
| Zibgee Router | NO | YES | Shelly 1PM Gen4 |
| Integrations | Google Home, Alexa, Apple HomeKit, Home Assistant, IFTTT, Matter | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Tie |
| Relay Channels | 1 | 1 | Tie |
| Wet Contact Mode | YES | YES | Tie |
- + Safety: Overheating protection
- + Power Off Memory: YES
- - Connectivity: Zigbee vs Bluetooth, Zigbee
- - Energy Monitoring: NO vs YES
- + Connectivity: Bluetooth, Zigbee
- + Energy Monitoring: YES
- + Dry Contact Mode: YES
- - Safety: None vs Overheating protection
- - Power Off Memory: NO vs YES
Frequently Asked Questions
Which is better overall: Aqara Single Switch Module T1 (No Neutral) or Shelly 1PM Gen4?
The Shelly 1PM Gen4 is better overall, adding built-in energy monitoring, Wi-Fi, Bluetooth, Zigbee and Matter connectivity, dry-contact mode, a Zigbee router role and a 16A rating. The Aqara Single Switch Module T1 (No Neutral) counters as the cheaper option with confirmed overheating protection and power-off memory.
What is the biggest difference between the Aqara Single Switch Module T1 (No Neutral) and the Shelly 1PM Gen4?
Energy monitoring and connectivity. The Shelly 1PM Gen4 measures instant power, voltage and total consumption and carries four radios plus dry-contact mode, while the Aqara is a Zigbee-only module (hub required) with no energy monitoring and wet-contact wiring only. Notably, both install without a neutral wire.
Does either relay measure power consumption?
Only the Shelly 1PM Gen4. Its precise power metering tracks instant power, voltage and total consumption, which is ideal for watching an appliance like a water heater. The Aqara Single Switch Module T1 (No Neutral) has no energy monitoring, so choose the Shelly if consumption data matters.
Do both relays work without a neutral wire?
Yes. Both the Aqara Single Switch Module T1 (No Neutral) and the Shelly 1PM Gen4 are designed to run without a neutral wire, so either can go into a no-neutral box. The decision then comes down to metering, connectivity and price rather than wiring.
Who should buy the Aqara Single Switch Module T1 (No Neutral)?
Buy it if you want the more affordable no-neutral relay with confirmed overheating protection and power-off memory, and you run a Zigbee or Aqara ecosystem with HomeKit and IFTTT. It is a clean fit for switching lights where energy data is not needed.
Who should buy the Shelly 1PM Gen4?
Buy the Shelly 1PM Gen4 if you want to both control and measure a circuit, need the higher 16A rating, and value multi-protocol connectivity, dry-contact triggering and a Zigbee router, all without a neutral wire.
