Trying to get this working. My rtl_433 doesn't sense my device so I'm trying to add it as a custom decode using
analyze_pulses true
then the recommended custom decoder
decoder n=oplinkremote,m=OOK_PWM,s=288,l=936,r=1040,g=0,t=259,y=0,bits=37

Trying to connect rtl_433_discoverandsubmit shows an empty screen:

Then when I press q to quit I can see this output on the console:

PS C:\Users\rlowe> rtl_433_discoverandsubmit --mqtt_server homeassistant.local --mqtt_port 1883 --mqtt_username mqtt --mqtt_password REDACTED
Expecting pdcurses at: C:\Users\rlowe\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\unicurses/64 bit binaries/pdcdllu/pdcurses.dll
At start of load devices from file
Exception in thread Thread-1 (_thread_main):
Traceback (most recent call last):
File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.10_3.10.3056.0_x64__qbz5n2kfra8p0\lib\threading.py", line 1016, in _bootstrap_inner
self.run()
File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.10_3.10.3056.0_x64__qbz5n2kfra8p0\lib\threading.py", line 953, in run
self._target(*self._args, **self._kwargs)
File "C:\Users\rlowe\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\paho\mqtt\client.py", line 3591, in _thread_main
self.loop_forever(retry_first_connection=True)
File "C:\Users\rlowe\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\paho\mqtt\client.py", line 1756, in loop_forever
rc = self._loop(timeout)
File "C:\Users\rlowe\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\paho\mqtt\client.py", line 1164, in _loop
rc = self.loop_read()
File "C:\Users\rlowe\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\paho\mqtt\client.py", line 1556, in loop_read
rc = self._packet_read()
File "C:\Users\rlowe\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\paho\mqtt\client.py", line 2439, in _packet_read
rc = self._packet_handle()
File "C:\Users\rlowe\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\paho\mqtt\client.py", line 3033, in _packet_handle
return self._handle_publish()
File "C:\Users\rlowe\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\paho\mqtt\client.py", line 3327, in _handle_publish
self._handle_on_message(message)
File "C:\Users\rlowe\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\paho\mqtt\client.py", line 3570, in _handle_on_message
on_message(self, self.userdata, message)
File "C:\Users\rlowe\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\rtl_433_discoverandsubmit\modules\mqtt_client.py", line 32, in on_message
device_id = f"{payload['model']}{payload['id']}"
KeyError: 'id'

Using MQTT Explorer shows this for the device:

So, my custom decoder doesn't provide an "id" (and I don't know how to set it up to provide one, or how to have it decode payloads to button names but I'm working on understanding rtl_433 still).

Details for SCMplus:

first_detected_time: 2024-06-03 19:23:38
last_detected_time: 2024-06-04 05:39:38
message_count: 22
time: 2024-06-04T05:39:33.770921-0600
protocol: 154
model: SCMplus
id: SCMplus_76410004
ProtocolID: 0x1E
EndpointType: 0x9C
EndpointID: 76410004
Consumption: 421910
Tamper: 0x0D08
PacketCRC: 0x8A87
MeterType: Gas
mic: CRC
topicprefix: rtl_433/9b13b3f4-rtl433
original_id: 76410004

While in the details view, occasionally all data displayed is replaced by another received device.