SONOFF PIR3-RF – 433MHZ RF PIR motion sensor

The SONOFF PIR3-RF is a 433MHz RF PIR motion sensor for smart home automation and security. It detects movement with passive infrared and, through an RF bridge, sends alerts and triggers scenes in the eWeLink app.

Why Choose the SONOFF PIR3-RF

RF motion sensors are affordable and battery efficient, making it practical to cover many rooms and corridors.

The SONOFF PIR3-RF communicates over 433MHz RF and connects to the eWeLink app through the SONOFF RF BridgeR2, which turns RF signals into smart notifications and scenes.

Key Features of the SONOFF PIR3-RF

PIR Motion Detection

Detects movement in rooms and corridors.

433MHz RF

Low power wireless communication.

Smart Scenes

Lights and alerts via the RF bridge and eWeLink.

Technical Highlights

• Model: SONOFF PIR3-RF, SKU Son-PIR3
• Frequency: 433MHz RF
• Technology: PIR
• App: eWeLink

Where to Use the SONOFF PIR3-RF

• Corridors: automatic lighting.
• Entrances: intrusion alerts.
• Garages: arrival detection.
• Offices: occupancy triggers.

Installation and Setup Tips

Add the gateway first, then pair each sensor close to it before moving it to its final position. Mount sensors on clean, dry surfaces using the supplied brackets or adhesive, following the recommended height and orientation. Test every device after installation, set up notifications for the right family members and create scenes, such as lights on when motion is detected at night.

Related Products at WeVolt

Explore more smart security products. Connect it with the SONOFF RF BridgeR2, combine it with the SONOFF DW2-RF door sensor, and compare with the SONOFF SNZB-03P Zigbee motion sensor. You can also browse all smart security products at WeVolt. For brand information, visit the official SONOFF website.

How to Choose Smart Security Devices

Start with what you want to protect and detect: doors and windows, movement, presence, smoke, water leaks or access. Choose the protocol next. Zigbee sensors are battery efficient and need a gateway, while Wi-Fi devices connect directly to the router. Make sure all devices work in the same app so they can trigger each other, for example a door sensor switching on lights or a smoke alarm sending alerts to every family member. Finally, plan placement carefully, since correct positioning matters as much as the device itself.

Maintenance and Testing

Test alarms and sensors regularly and replace batteries when the app warns of low power. Keep sensors free from dust and paint, check that mounting positions have not moved and review automation rules from time to time. Regular checks keep your security system reliable when it matters most.

Building a Complete Smart Security System

A good system combines several layers: contact sensors on entrances, motion or presence sensors in key rooms, smoke and leak detection for safety, and a gateway that brings everything into one app. Add scenes that react automatically, such as switching on lights or sending alerts, and share access with every household member so the right person is informed immediately.

Why Buy from WeVolt

WeVolt supplies smart home, lighting control and electrical products to homeowners, electricians, panel builders and integrators. We select brands with proven reliability, keep technical information clear and help you choose compatible devices for each project. Whether you need a single unit or a full installation, our team can advise on wiring, app setup and system design so your project runs smoothly from order to handover.

Frequently Asked Questions

What frequency does the SONOFF PIR3-RF use?

433MHz RF.

Does it need a bridge?

Yes, such as the SONOFF RF BridgeR2 for app integration.

What does it detect?

Motion, using PIR technology.

Can WeVolt help me choose the right product?

Yes. Our technical team can check compatibility with your installation, recommend accessories and answer wiring or app setup questions before and after your purchase.

Order the SONOFF PIR3-RF from WeVolt for affordable RF motion detection.