USB RFXCom transmitter

Hi
I try to set up my USB RFXCom transmitter with a temp sensor.
I have run the rfxcom’s RFXmngr and enabled the protocal for the temp sensor.

But when I connect the RFXCom transmitter to my Pi again and try to configure the HA

`sensor:`
      # 433MHz temp and humunity sensor
      - platform: rfxtrx
        automatic_add: True


# Switches
switch:
  # 433MHz switches
  platform: rfxtrx
  automatic_add: True
  signal_repetitions: 5
  devices:
    # 433MHz Wall Plugs
    0b11000001877bfe10010f70:
      name: Wall Plug 1

It will not find the temp sensors.
But the switch works fine.

What’s wrong?

1 Did you click Set Mode followed by Save Settings in RFXmngr?
2 I don’t know but HA does not set the protocols after connection?
3 The RFXtrx is not too close installed to the RPI (RPI produces RF noise at 433MHz)