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Sonoff 4CH PRO (R3) WiFi + RF smart relay switch with 4 channels, NO/NC and dry contact support - eWelink Store
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SONOFF 4CH Pro R3 Wi-Fi Smart Switch 4-Channel Din Rail Mounting Home Automation,Self-Locking/Interlock Control Home Appliances, RF/APP/Voice/LAN Control, Works with Alexa(1 Pack): Amazon.com: Tools & Home Improvement
![Sonoff 4CHPRO R3 to replace Impulse Switches in Electrical Cabinet - Hardware - Home Assistant Community Sonoff 4CHPRO R3 to replace Impulse Switches in Electrical Cabinet - Hardware - Home Assistant Community](https://community-assets.home-assistant.io/original/3X/a/9/a9fa6440363e248c27f754c020c41182415e1330.jpeg)
Sonoff 4CHPRO R3 to replace Impulse Switches in Electrical Cabinet - Hardware - Home Assistant Community
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