TPMS TX transmits simulated Tire Pressure Monitoring System (TPMS) sensor signals. It is the companion transmitter to TPMS Rx and can replay sensor data previously saved by the receiver app.

Note: Transmitting fake TPMS signals in the 315 or 433 MHz band may interfere with vehicle dashboard readings. Use only on your own vehicles and equipment in a controlled environment.

Settings

• Frequency: 314.9 MHz, 315.0 MHz, or 433.9 MHz. Default: 314.9 MHz.
• Sensor type: Schrader, FLM_64, FLM_72, FLM_80, or GMC_96. Determines the encoding and signal type used.
• Pressure unit: kPa, PSI, or BAR.
• Temperature unit: °C or °F.
• Transponder ID: 24-bit or 32-bit hexadecimal sensor ID depending on sensor type.
• Pressure: Pressure value to transmit. Maximum is 340 kPa for Schrader/FLM types, 701 kPa for GMC_96. A !MAX warning is shown if the value exceeds the type's encoding limit.
• Temperature: Temperature value to transmit.
• Flags: Additional status flags byte.
• Repeat: Number of transmission repetitions. Default: 5.
• Load: Load a previously saved sensor file from TPMS/TPMS_.TXT (files created by the TPMS RX app's Save button).
• Save: Save the current settings to a file in the TPMS/ directory for later replay.
• Transmit / Stop: Starts or stops the transmission.

Settings Persistence

Pressure unit and temperature unit are saved to tx_tpms.ini.