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W4WSR-3500 Smart Relay Switch

Name: Homewell W4WSR-3500 Smart Relay Switch
Brand: Homewell
SKU: homewellw4wsr3500smartrelayswitch
Rating: 4.1 (6 reviews)

Homewell Automation

Key Hardware & Protocol Features

Matter Protocol Support
In-Wall Wireless Switch Relay
Voice Control Integration
Compact Design for Junction Boxes
Remote Scheduling and Automation

Verified Deep-Link Handoffs (Registry, Retail & Corporate)

Official CSA Certification Registry → Amazon Smart Home Store → Best Buy Availability → Compare Retailers (Google Shopping) → Corporate & Ticker (NYSE: REZI) →

Homewell Corporate DNA & Headquarters

Full Brand Portfolio (4.1/5) →

Parent Company Resideo Technologies, Inc.

Headquarters Location United States

Corporate Structure Public (NYSE: REZI)

Linked CSA Certification Records

Smart Switch Socket Plug - CSA-IOT

Certificate ID: smart-switch-socket-plug-3 • Date: 04/30/2025 • Wi-Fi, Bluetooth

Official CSA Registry →

Smart Switch Built-in Module - CSA-IOT

Certificate ID: smart-switch-built-in-module-2 • Date: 07/23/2025 • Wi-Fi, Bluetooth

Official CSA Registry →

W4WSR-3500 - CSA-IOT

Certificate ID: w4wsr-3500 • Date: 05/29/2026 • Wi-Fi, Bluetooth

Official CSA Registry →

Ecosystem Strengths

Reliable build quality, strong legacy HVAC integration, robust ecosystem compatibility, and growing support for Matter across smart thermostats and home comfort devices.

Considerations

Higher price points compared to budget competitors, occasional clunky mobile app UI, and cloud subscription dependencies for advanced security features.