Lenser Technology Co., Ltd is a professional manufacturer of security products in Shenzhen, China. We have more than 10 years' experience in this field, the products including: Wireless GSM SMS Alarm System Wireless Auto dial Alarm System GSM + PSTN dual network Alarm System Alarm Monitoring Management Station Alarm accessories: motion detector/ fire smoke detector / gas detector/ magnetic contact / shutter sensors / water leak sesnors/ Beam and Barrier detctors/ Strobe siren etc. IP ...