With bluetooth function and long battery life， this TPMS is a perfect safety measurement device for your car. 

Features: 
Match with professinal internal sensors. 
Specific Bluetooth channel， work with Steelmate Engine Lock for Smartphone simultaneously.     
Real-time individual tire data on for iPhone/for iPod Touch/for iPad/for Android Smartphone. 
No sensor matching is needed. 
Military battery: Long battery life(more than 5 years). 
Sensor operating temparature: -40- +125 celsius/-40- +257 Fahrenheit. 
The transceiver provides both visual and audible alarm even no Bluetooth connection.     
Automatically connect when the Bluetooth of paired for iPhone/for iPod Touch/for Ipad/for Android Smartphone is on.     
Up to 4 for iPhone/for ipod Touch/for iPad/for Android Smartphone can be paired. 

Specifications: 
Sensor 
Operating Freq.: 433.92MHZ±0.05MHZ 
Operating Current: ≤18mA 
Operating Temp.: -40℃～+125℃ / -40℉ ~ +257℉ 
Battery Type: Military Battery 
Battery Voltage: 3.6V 
Battery Life: > 6 years 
Peak Current: ≤ 18mA 

CIG Plug Display 
Operating Frequency: 433.92MHz±0.05MHz 
Operating Current: ≤ 50mA 
Operating Voltage: 12±3V 
Standby Current: ≤8mA 

System 
Temp Range: -20℃～+85℃ / -4℉ ~ +185℉ 
Pressure Range: 0～5 Bar / 0 ~ 116PSI 
Temp Precision: ±1℃ / ±2℉ 
Pressure Precision: 0.1 Bar / 1.5 PSI 

General: