The connected consumer does not switch. Only a click can be heard. What could be the cause?
Please check the electrical connection of the switch actuator. The switch actuator smart 1-channel is potential-free at the factory. Bridge L1 (230 volts) to the relay inputs. You can also switch other potentials with the switch actuator, for example 12 volts for solenoid valves, loudspeaker signal for your garden loudspeakers or similar. Please note the connection diagram for this.