Domoticz

Hi All, this is my first post on this forum.
I'm using the latest Domoticz on Synology NAS wit Aeon Gen5 stick.
I managed to install Fibaro's FGBS-001. It shows correctly temperature from DS18B20 and two switches.
I installed simple led to the output 1 to test how switch works (negative terminal is switched).
However, when I'm trying to switch on/off message "Error sending switch com…check device/hardware !" appears (both via Utilis and json.htm?type=command&param=switchlight&idx=8&switchcmd=On)
Anyone can give me hints how to deal with this ?

I'm no specialist, but the fibaro binary sensor is, as the name says, just a sensor. You can detect inputs like a doorbell button (dry contact) or temp sensor, but you cannot switch the outputs remotely. I think the output is only triggered by the input of the sensor.