Shelly QoS settings

[Kdiamond]

Hi Michael.

Shelly has a setting for QoS.




I was able to find is the following:

The QoS is part of the MQTT specification. In a very simplified way, it goes from 0 (no confirmation) to 2 (double acknowledgment) it’s a setting of how strict or relaxed you want the message delivery confirmation to be. QoS 0 is 'fire and forget' while QoS 2 requires both parties to do some communications.

Do I need to set MQTT in order to use QoS 2? Is there any specific setting or I simply enable QoS 2 in shelly settings?

Thank you
Br,
Dali

[Michael McSharry]

The Shelly device will control the QOS that it uses to for publishing information. The mcsMQTT QOS setting (global on the General tab, local on the Edit tab) will control the QOS that mcsMQTT uses when it publishes. The global setting is the initial value of QOS when a HS device is created. The local setting will then be applied when the message is published. QOS 2 has situations where you may want to use it, but should not be overused due to the resource burden on the handshake to achieve it.

[Kdiamond]

Thank you Michael. Will have a look.

Br,
Dali