Dear sir, We are the Manufacture of follow sensor elements: - Own patent's shock sensor element for car alarm and lock. - Own patent's tilt switch and sensor element. (instead of Mercury type) - Shock detector model 201C type, for car alarm with VR sensitive adjust - Shock detector model VB type, for security use such as window shock detecting. - Ultrasonic transducer 40KHz for car security use. - High power ultrasonic transducer from 28KHz to 1.0MHz for ultrasonic machine use. -Air pollution sensor element -Alcohol sensor element -Atmospheric pressure sensor element -Carbonate monoxide sensor element -LPG and Nature Gas sensor element -Capacitive humidity sensor element -Smoke sensor element -Temperature sensor element measurement range from -40 C to +300 C, resolution:1%, 3%, 5% Products design, OEM are available. Any interesting, please contact Sencera Co., Ltd. Mr. Justine Lee http://welcome.to/sencera justinel@ms14.hinet.net Fax:886-2-27041279 Tel:886-2-27046595 Thanks