Shenzhen Kelvin Electronics Co., Ltd is a professional manufacturer of wireless security products and established in 2,006. Factory covered 1,000 square meters. There are 4 product lines, 56 staffs and 2 researchers to keep ensure delivery time and productions diversification. Mainly products include wireless remote controls, wireless remote switches, remote control duplicators, smoke detectors, gas leak alarms, wireless transceiver modules, PIR detectors, door sensors, intelligent wall ...