I am also questioning myself as if the 915MHZ is properly working.
I have this test unit sniffing and saw the following
T: isAdupl?
N: Send on /RTL_433toMQTT/TPMS/Schrader-EG53MA4/FF99BE msg {"model":"Schrader-EG53MA4","type":"TPMS","flags":"c73ad9bc","id":"FF99BE","pressure_kPa":597.5,"temperature_C":120.5555,"mic":"CHECKSUM","protocol":"Schrader TPMS EG53MA4, PA66GF35","rssi":-95,"duration":42000}T
T: jsonPubl - ON
T: [ OMG->MQTT ] topic: home/OMG-RTL-915-test/RTL_433toMQTT/TPMS/Schrader-EG53MA4/FF99BE msg: {"model":"Schrader-EG53MA4","type":"TPMS","flags":"c73ad9bc","id":"FF99BE","pressure_kPa":597.5,"temperature_C":120.5555,"mic":"CHECKSUM","protocol":"Schrader TPMS EG53MA4, PA66GF35","rssi":-95,"duration":42000}
: Announce Device sensor on homeassistant/sensor/TPMS-Schrader-EG53MA4-FF99BE-temperature_C/configT: Min ind: 0
T: store code : 121 / 1103498
T: Col: val/timestamp
T: mem code : 121 / 1103498
T: mem code : 0 / 0
T: mem code : 0 / 0
T: mem code : 0 / 0
T: mem code : 0 / 0
T: mem code : 0 / 0
T: mem code : 0 / 0
T: mem code : 0
/ 0
T: mem code : 0 / 0
T: mem code : 0 / 0
T: mem code : 0 / 0
T: mem code : 0 / 0
T: [ OMG->MQTT ] topic: homeassistant/sensor/TPMS-Schrader-EG53MA4-FF99BE-temperature_C/config msg: {"stat_t":"+/+/RTL_433toMQTT/Schrader-EG53MA453MA4/FF99BE","dev_cla":"temperature","unit_of_meas":"°C","name":"temperature","uniq_id":"TPMS-Schrader-EG53MA4-FF99BE-temperature_C","val_tpl":"{{ value_json.temperature_C | is_defined }}","state_class":"measurement","device":{"identifiers":["TPMS-Schrader-EG53MA4-FF99BE"],"connections":[["mac","TPMS-Schrader-EG53MA4-FF99BE"]],"model":"Schrader-EG53MA4","name":"TPMS-Schrader-EG53MA4-FF99BE","via_device":"OMG-RTL-915-test"}}
T: Announce Device sensor on homeassistant/sensor/TPMS-Schrader-EG53MA4-FF99BE-pressure_kPa/config
T: [ OMG->MQTT ] topic: homeassistant/sensor/TPMS-Schrader-EG53MA4-FF99BE-pressure_kPa/config msg: {"stat_t":"+/+/RTL_433toMQTT/Schrader-EG53MA453MA4/FF99BE","dev_cla":"pressure","name":"pressure","uniq_id":"TPMS-Schrader-EG53MA4-FF99BE-pressure_kPa","val_tpl":"{{ value_json.pressure_kPa | is_defined }}","state_class":"measurement","device":{"identifiers":["TPMS-Schrader-EG53MA4-FF99BE"],"connections":[["mac","TPMS-Schrader-EG53MA4-FF99BE"]],"model":"Schrader-EG53MA4","name":"TPMS-Schrader-EG53MA4-FF99BE","via_device":"OMG-RTL-915-test"}}
T: Announce Device sensor on homeassistant/sensor/TPMS-Schrader-EG53MA4-FF99BE-rssi/config
T: [ OMG->MQTT ] topic: homeassistant/sensor/TPMS-Schrader-EG53MA4-FF99BE-rssi/config msg: {"stat_t":"+/+/RTL_433toMQTT/Schrader-EG53MA453MA4/FF99BE","dev_cla":"signal_strength","unit_of_meas":"dB","name":"rssi","uniq_id":"TPMS-Schrader-EG53MA4-FF99BE-rssi","val_tpl":"{{ value_json.rssi | is_defined }}","state_class":"measurement","device":{"identifiers":["TPMS-Schrader-EG53MA4-FF99BE"],"connections":[["mac","TPMS-Schrader-EG53MA4-FF99BE"]],"model":"Schrader-EG53MA4","name":"TPMS-Schrader-EG53MA4-FF99BE","via_device":"OMG-RTL-915-test"}}
When I look up this TPMS I see that it is 433 mhz maybe? So am I truly listening on 915 mhz with this build/config?