Description: 
Many accidents are caused by the flat tire on the highway. As a car owner, the safety of driving is the most important. To reduce such accidents, the tire pressure monitoring system (TPMS) is necessary. With the TPMS, we can keep the tire working within the specified pressure and temperature range at any time to reduce the damage of the tire for safe driving.

Main Features: 
- Directly powered by the cigarette lighter, very convenient 
- The 2A USB charging port for phone or other electronic devices charging 
- With a digital screen displaying the car tire pressure and temperature simultaneously, simple and intuitive
- Freely switch pressure units (bar / psi), temperature units (Deg.C / Deg.F) 
- 4 internal sensors are all in high sensitivity and good accuracy for measuring pressure and temperature 

Specifications: 
TPMS 
- Working voltage: DC 5V
- Working current: 16mA and less 
- Working temperature: -40 - 85 Deg.C 
- USB output: 5V, 2A 
- Transmission frequency: 433.92MHz
- Sensitivity: less than -105dBm
- Pressure unit: psi / bar
- Temperature unit: Deg.C / Deg.F 
- Power supply: cigarette lighter
Internal Sensor 
- Standby current: less than 0.7uA
- Transmission current: less than 10mA 
- Pressure measuring range: 0 - 3.5 bar
- Temperature measuring range: 0 - 70 Deg.C 
- Accuracy: + / - 3 Deg.C
- Working temperature: -40 - 125 Deg.C 
- Battery: CR2025 3V 330mAh button cell (built-in) 
- Battery life: 3 - 5 years