Есть не дорогое серийное устройство.

Данные валятся в таком виде:
1 1 4F 0 0 2
3 0 4F 0 0 2
2 2 4F 0 0 2
4 2 4F 0 0 2
1 1 4F 0 0 2
3 0 4F 0 0 2
2 1 4E 0 0 2
1 1 4F 0 0 2
4 2 4F 0 0 2
1 1 50 0 0 2
3 0 4E 0 0 2
2 0 4F 0 0 2
4 2 4F 0 0 2
| | | | | |
| | | | | |__Status
| | | | |____Battery
| | | |______Sensor Type
| | |________Temperature
| |___________Pressure
|_____________Tyre Number

Note:
Baud rate = 9600
All Date are Hex value and transfer with ASCII code format and demarcate by a Space code(0x20)

Tyre Number:
Sensor locate in a tyre

Pressure:
Pressure value = Data * 1.3725 kpa (450 KPA Version)
Pressure value = Data * 2.3529 kpa (700 KPA Version)
Pressure value = Data * 5.49 kpa (1400 KPA Version)

Temperature:
Temperature value = (Data V50) J

Sensor Type:
0 = 450 KPA Version
1 = 700 KPA Version
2 = 1400 KPA Version

Battery:
Voltage = 3.6- Battery я 0.2 (Volt)

Status:
0 = Sleep
1 = Wakeup
2 = Normal
3 = Warning
4 = Shut Down