GREENBLUE Flush-Mount Wi-Fi Control Relay GB739

Traditional light switches limit control to the physical wall plate, but the GREENBLUE GB739 brings smart automation to existing installations without replacing your switch. This flush-mount Wi-Fi relay hides behind the switch, enabling remote and voice control of lights or appliances from anywhere.

Who is it for

Homeowners and renters who want smart lighting without changing their existing switches. Ideal for those who prefer a clean, invisible installation and need reliable automation for lamps, ceiling lights, or small appliances.

Main features

• Wi-Fi connectivity (IEEE 802.11 b/g/n 2.4GHz) for direct control via the Gosund or Smart Life app
• Voice control compatibility with Amazon Alexa and Google Assistant
• Supports up to 2300W resistive loads (10A) for lighting and most household appliances
• Timer, schedule, and scene functions for automated routines
• Flush-mount design fits behind standard wall switches, preserving your existing décor
• Fire-retardant PC V0 housing for enhanced safety
• CE and RoHS certified

Specifications

• Input voltage: AC 100-240V, 50/60Hz
• Max load current: 10A
• Max load power: 2300W
• Number of channels: 1
• Wiring requirement: Live and Neutral
• Operating temperature: -10°C to 40°C
• Operating humidity: 5% to 95% RH (non-condensing)
• Material: PC V0 fire-retardant

Tips

Ensure your switch box has a neutral wire before installation. For best performance, place the relay within range of your 2.4GHz Wi-Fi network. Use the app to create scenes that combine multiple devices for one-tap control.