Founded in 1987, the ISO9001 and TS16949 certified Tesor Plus Corp. is a professional designer and manufacturer of GPS tracker, smartphone remote control & tracking, smartphone home automation & security, smartphone garage remote control, touch-screen 2-way alarm & starter, LCD display 2-way alarm, dialog 2-way alarm, frequency jumping 2-way alarm, 4-way dialog alarm, wireless relay immobilizer, wireless fingerprint immobilizer, wireless proximity immobilizer, Bluetooth proximity alarm, DIY ...