The Tasmota node itself worked perfect for me (and it is easier to handle than MQTT), but it crashed at Node-RED startup when using together with the enocean node, which I needed for another connection.
see the thread Tasmota node not working after Tasmota 8.30 firmware update?
So I cannot install it to make a test flow for you, but I remember, that you just have to use the Tasmota name of the device to use it.
But you can use the Tasmota devices via MQTT with a small overhead, too.
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