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Shelly Plus 1
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Shelly Plus 1

Bottom line

Worth considering

The relay’s power supply and switched circuit have separate requirements. A potential-free contact does not make it suitable for every voltage or appliance. Have installation checked against the manufacturer’s wiring diagrams, load ratings, and protective measures.

Best for

switch a compatible circuit through a local integration

Keep in mind

The local-first grade is not a promise of hardware lifespan; review the evidence below.

Local-first gradeClears every deal-breaker — based on local control, open integration, and cloud requirements.
A
No Cloud NeededThe described local functions do not need a vendor cloud service during normal operation. Controller, setup, and update requirements still apply.
+Local ControlA documented local path is available for supported functions. Setup, remote access, and other features may still need an account or internet connection.
+Open APIA documented interface or standard provides an integration path. Check the listing for supported functions, access requirements, and controller compatibility.

Researched from manufacturer documentation and published integration guides. A grade describes local control, open integration, and cloud dependence; it is not a guarantee of lifespan. How we evaluate

💡Lighting🏠Hub

Added Dec 8, 2025

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Resources

Official WebsiteAPI DocumentationShelly CommunityGitHubDocumentation

Key trade-offs

Why it stands out

The relay’s power supply and switched circuit have separate requirements. A potential-free contact does not make it suitable for every voltage or appliance. Have installation checked against the manufacturer’s wiring diagrams, load ratings, and protective measures.

What to weigh

The relay’s power supply and switched circuit have separate requirements. A potential-free contact does not make it suitable for every voltage or appliance.

About

Shelly Plus 1 is a Wi-Fi relay with a potential-free contact and documented local integration options, including MQTT.

Compatibility and limitations

The relay’s power supply and switched circuit have separate requirements. A potential-free contact does not make it suitable for every voltage or appliance. Have installation checked against the manufacturer’s wiring diagrams, load ratings, and protective measures. Local integration is available with the supplied firmware; replacing firmware is not necessary to obtain it. This model does not provide the energy monitoring of a 1PM.

Research basis

This is a documentation-based overview. We have not independently tested this product or established its service life.

Specifications

Connection2.4 GHz Wi-Fi
OutputPotential-free relay contact
IntegrationDocumented API and MQTT

Frequently Asked Questions

No. Choose a model with documented power metering if that is required, and check its different wiring and load restrictions.

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Resources

Official WebsiteAPI DocumentationShelly CommunityGitHubDocumentation

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