If you want it for your own use, you can buy it on eBay:

Technical Properties:

Display Specs:

ITEMS	SPECIFICATIONS
Temperature Setting Range	-20°C--93°C
Operation Temperature	-20°C--80°C
Storage Temperature	-30°C--85°C
Power Supply	DC 5V
Frequency	RF433.92MHz
Battery	400mAh, 3.7v, High temperature resistant: 80+/-5°C. Check more...
Display	FSTN LCD(63*25/23*1.10Tmm), half penetration;  LED backlight: red and white SMD, 68*22*2.2mm
Size	87*73*35mm
Weight	82g
TPMS chip	ATA5428
Solar Power supply	0.35w power, 5V

Sensor Specs:

ITEMS	SPECIFICATIONS
Pressure Range	1-4.5Bar(100kPa-450kPa);  1-9bar(100kPa-900kPa)
Temperature Setting Range	-20°C--93°C
Operation Temperature	-20°C--80°C
Storage Temperature	-30°C--85°C
Power Supply	DC 5V
Frequency	RF433.92MHz
Battery	Lithium-Manganese Button Cell Battery working temperature: -40°C--125°C
contact part with tire stem	anti-erosion brass
Size	21 x 20 mm (ø x h)
Weight	82g
TPMS chip	SP370-25-116-0
Pressure Accuracy	+-1.5psi
Temperature accuracy	+-3°C
Transmission power	<=10dBm
Standby Battery life	>=3 years

sensor battery:

●  broad working temperature: -40°C to 120°C.
●  wonderful leakproof in high temperature environment or high speed vehicles.
●  Working well in 200G motion status(equal to vehicle in 300km/h speed)

ITEMS	SPECIFICATIONS
battery	Lithium-Manganese Button Cell Battery
Voltage	3V
Capacity(discharge to 2V with 15kΩ in 20°C)	560mAh
size	24.5(-0.3)*5.0(-0.3)mm ø x h
Battery weight	about 6.8g

size:

Benefit From Tyre Pressure Monitor

Packing Details(standard)

4 tire sensors + 1 monitor display in 1 box;

Standard accessories:

1 wrench | 4 nuts | 1 non slip mat |