How to increase the range of a SONOFF 4CH by replacing the original with an external wifi antenna

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SONOFF NSPanel Smart Scene Wall Switch(86/EU Type/120 Type)

433Mhz RF Switch Wireless Relay Receiver DC 6V 12V 24V 30V 4CH Realy and 500 Meters Transmitter,for Garage/light/Motor

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Sonoff Wifi Switch, DC5V 12V 24V 32V Wireless Relay Module Smart Home Automation Modules APP Remote Control Timer Switch Voice Control Compatible with Alexa Google Home

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SONOFF TX Series WiFi Wall Switches UK EU US

Wireless Repeater WiFi Router 2.4G/300Mbps WiFi Booster with 4 External Antennas Wide Coverage WiFi Signal Amplifier - AliExpress

External antenna for sonoff 4ch pro R2 - Hardware - Home Assistant Community

The Sonoff 4CH Pro - Scargill's Tech Blog

Can a detachable terminal block be problematic for a 433 MHz whip antenna? - Electrical Engineering Stack Exchange

The new Sonoff DualR3 is here!

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