This product can help monitor tire pressure， prevent flat tire， save fuel， reduce tire wear.

Features:
100% DIY installation.
LED red rim cigarette plug display.
Real-time tire pressure monitoring. Tire pressure scrolls clockwise to show.  
Match with 4 valve-cap external sensors.
Wireless transmission， no wires connection is needed.
Sensor preset in factory， no pairing is needed.
Visual and audible alarm.
High / low pressure alarm.
High temperature and low battery of sensors will be alarmed.

General:
Brand: Steelmate
Model: ET-720BE
Pressure unit: Bar
Replaceable battery: CR1632
Package size: 13 * 9 * 6cm / 5 * 3.6 * 2in  
Package weight: 165g / 5.8oz

Specifications:
Sensor:
Operating frequency: 433.92MHz
Operating voltage: 3V
Operating temp.: -20℃～+60℃
Pressure range: 0-3.5Bar
High pressure value: 3.3Bar
Low pressure value: 1.7Bar
Display:
Working frequency: 433.92MHz
Operating voltage: 12±3V
Working temp.: -40℃～+85℃

Package List:
1 * Display
4 * Sensors
1 * Set of Accessory
1 * User Manual