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Presence Sensors · Head to head

Meross Presence Sensor MS605 vs Third Reality Smart Presence Sensor R3

Full Smart Presence Sensors comparison in 2026

Updated October 2026
Data from Amazon and official Meross and Third Reality sites.
2026 verdict
In this 2026 Meross Presence Sensor MS605 vs Third Reality Smart Presence Sensor R3 comparison, Meross Presence Sensor MS605 comes out ahead thanks to price, warranty, and weather resistance.
Meross Presence Sensor MS605
Winner
Meross Presence Sensor MS605
$25.99$27.596% OFF

Last recorded price

Buy on Amazon USA
What pushes it ahead is price, warranty, and weather resistance, and connectivity and integrations keep the advantage from looking narrow. Choose Third Reality Smart Presence Sensor R3 only if rating matters more to you than the broader advantage from Meross Presence Sensor MS605. That keeps the verdict firmly in favor of Meross Presence Sensor MS605.
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FeatureMeross Presence Sensor MS605Third Reality Smart Presence Sensor R3Winner
Price$25.99$39.99Meross Presence Sensor MS605
Rating3.13.4Third Reality Smart Presence Sensor R3
Warranty2 years1 yearMeross Presence Sensor MS605
Weather ResistanceIP67NOMeross Presence Sensor MS605
ConnectivityBluetooth, Thread ProtocolZigbeeMeross Presence Sensor MS605
IntegrationsGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home AssistantMeross Presence Sensor MS605
SensorsPresence, LightPresence, LightTie
AlertsPresence AlertsPresence AlertsTie
Multi-Person DetectionNONOTie
Range of Detection6m / 19ft6m / 19ftTie

Price history compared

Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.

  • Meross Presence Sensor MS605
  • Third Reality Smart Presence Sensor R3

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Frequently Asked Questions

Which is better overall: Meross Presence Sensor MS605 or Third Reality Smart Presence Sensor R3?

Meross Presence Sensor MS605 has the stronger overall profile in this comparison, especially for price, warranty, and weather resistance.

What is the biggest difference between Meross Presence Sensor MS605 and Third Reality Smart Presence Sensor R3?

Price is one of the clearest differences: Meross Presence Sensor MS605 lists $25.99, while Third Reality Smart Presence Sensor R3 lists $39.99.

Which one looks better on price?

Meross Presence Sensor MS605 is listed at $25.99, while Third Reality Smart Presence Sensor R3 is listed at $39.99. Meross Presence Sensor MS605 (better spec).

Who should buy Meross Presence Sensor MS605?

Choose Meross Presence Sensor MS605 if your priority is price and warranty and that matters more than rating.

Who should buy Third Reality Smart Presence Sensor R3?

Choose Third Reality Smart Presence Sensor R3 if your priority is rating and that matters more than price.

Full comparison table

Compare all 15 Presence Sensors side by side

You are looking at two of them. The full table lines up all Presence Sensors in the catalog with the same specs, so you can filter by what you need and sort by price or rating.

  • 15 Presence Sensors
  • 33 specs compared
  • 30 filters
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