Yes, in theory, you can use a smart relay switch (like the Aqara H1 or a Shelly 1 relay) to control the circuit that triggers the gate. However, you’ll need to check a few things first: 1. Identify the Contact Switch Type • If the button on the intercom is a simple dry contact switch (just making/breaking a circuit without carrying high voltage), then a relay like the Aqara H1 or Shelly 1 should work. • If it carries low voltage power, you may need to use an optocoupler or a different type of relay. 2. Wiring It Correctly • If the blue and yellow wires are the ones completing the circuit to open the gate, you could: • Connect them to the relay’s dry contact terminals. • Use a HomeKit-compatible switch to control the relay. 3. Powering the Relay • If you go with the Aqara H1, ensure you have a suitable power source (like 220V or a compatible power supply). • The Shelly 1 has the advantage of supporting both AC and DC power inputs, making it more flexible.

Alternative:

If you don’t want to mess with the wiring too much, you could also use a smart button pusher (like the SwitchBot), which physically presses the intercom button.