Dynamic monitoring tire  pressure to prevent puncture and runflat.<br />Improve fuel efficiency, extend tire life, increase traffic safety and avoid abnormal wear of vehicle parts.<br />LED cigarette lighter display, 4 tire pressure are displayed at the same time.<br />Wireless transmission.<br />DIY product with external sensor, quick and easy to installation.<br /><br />DO YOU KNOW……<br />20% under-inflation reduces tire lifetime by 30%;<br />30% over-inflation reduces tire lifetime by 45%;<br />30% pressure lower looks like proper inflated tire<br />So, you need a TPMS (Tire Pressure Monitoring System) to monitor your tire situation, warn abnormal tire pressure early, reduce the failure rate and the risk of accidents, improve fuel efficiency, extend tire life and increase traffic safety.<br /><br /><br />Model: TP-74B<br />Material: ABS<br />Color: Black<br />Dimensions:<br />Sensor: high about 16mm and  diameter about 23mm<br />Ricever: high about 38mm and  diameter about 33mm<br />Receiver parameters:<br />Operating frequency: 433.92MHz<br />Operating voltage: 12 ± 3V<br />Operating temperature: -40℃〜+85℃/-4℉〜+185℉<br />Operating  Current:≤60mA<br />Quiescent Current: ≤25mA<br />Sensor parameters:<br />Operating frequency: 433.92MHz<br />Operating voltage: 1.8〜3.3V<br />Sensor Battery: CR1632 ( not included )<br />1x Ricever<br />4x Sensors<br />2x Clamp keeps<br />1x Hexagon nut spanner<br />5x Hexagon nuts<br />4x Waterproof rubber rings<br />1x English manual<br />Original box packaging!<br /><img src="http://img6.eachbuyer.com/x9/p100/cq746_1.jpg" / noproxy>                                                        <img src="http://img6.eachbuyer.com/x9/p100/cq746_2.jpg" / noproxy>                                                        <img src="http://img6.eachbuyer.com/x9/p100/cq746_3.jpg" / noproxy>                                                        <img src="http://img6.eachbuyer.com/x9/p100/cq746_4.jpg" / noproxy>                                                        <img src="http://img6.eachbuyer.com/x9/p100/cq746_5.jpg" / noproxy>                                                        <img src="http://img6.eachbuyer.com/x9/p100/cq746_6.jpg" / noproxy>                                                        <img src="http://img6.eachbuyer.com/x9/p100/cq746_7.jpg" / noproxy>                                                        <img src="http://img6.eachbuyer.com/x9/p100/cq746_8.jpg" / noproxy>                                                        <img src="http://img6.eachbuyer.com/x9/p100/cq746_9.jpg" / noproxy>                                                        <img src="http://img6.eachbuyer.com/x9/p100/cq746_10.jpg" / noproxy>                                                        <img src="http://img6.eachbuyer.com/x9/p100/cq746_11.jpg" / noproxy>