On Vera/Luup, one can send data to a ZWave node directly. For example, the following action will tell a Zooz siren with ZWave node ID 133 to play a chime tone:
luup.call_action( "urn:micasaverde-com:serviceId:ZWaveNetwork1", "SendData",
{ Node="133", Data="x79 8 34" }, 0 )
I cannot find an equivalent to this in the eZLO API documentation. Is there one? This is a much-needed function…