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CMOS Low-power MPU,Ultra-low power consumption, longer battery life Built-in millions code and Wireless transmit signal Low voltage alarm function, Automatic temperature compensation Intelligent logic analysis, keep off false alarm, Anti-visible light, Anti-high frequency interference 【JCHENG'S After Service】30 days Money Refund,1 year quality warrantee and life time tech support. Any question or advise on our product, please feel free to contact us by support@jcheng-security.com, will reply you within 24 Hours. Also, if not clear about setting up, we have teaching video of the alarm series on YouTube, please search 'JCHENG SECURITY' and find us!, Manufacturer: Shenzhen Jing Cheng Digital Surveillance Co.,Ltd