I would like ask developers there for help with creating DTH for eWeLink Four-Channel Relay. I tried DTH - Zigbee Multiswitch and working only two channel. Unfortunately I´m only user and I don´t know create DTH. This is very nice device and can help to another users.
I used it as a bridge between Google assistant/Smartthings and home automatization Jablotron. Control of gate, pergolas baldachin and sunblind aso. Zigbbee smart switch is connected as a trigger to inputs to Jablotron:-)