Shelly 2.5 best wiring diagram for 2 on-off switches?

Hello, I’m new to Shelly (but amazed at the possibilites) - I’m renovating my house in the uk and have asked an electrician to install a few in my house. However, electricians aren’t so familiar

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SOLVED] Shelly1 wiring with 2-way switching (hotel switch) - shelly1 - openHAB Community

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Shelly 2.5 Relay Switch, WiFi Smart Home Automation, Compatible with Alexa & Google Home, iOS Android, No Hub Required, Wireless Light Switch, Smart Appliances, Dual Power Metering, UL Certified: .com: Tools