【DIY installation】JC wireless alarm siren can work as a standalone alarm host or wireless siren &detector kit which code and work with other alarm host. It can match multiple wireless detectors and be controlled by remote controller, make local alarm by sound and light when detector triggered 【Standard-alone siren kit】Take the siren as host, any 433Mhz detector or accessories can work with it! It max with 20 wireless defense zones and at most 5 wireless remote controllers, in arm state, when triggered, the siren alarm keeps with both voice prompts and quick flash strobe for 3mins, if no operation, return to standby state 【Wireless 433 Frequency Alarm Accessory Kit】JC Senor alarm kit include: Siren Host x 1, window/door senor x 2, water leakage sensor x 1, remote controller x 2, warning stickers x 2, all you get 6 different types of detector accessories at super cost-effective price! It could work and pair with 433 frequency alarm host 【One-key-control function】Remote control to Arm/emergency alarm/disarm. Real-time SOS function: Timely response some exceptional cases occur at home and sudden illness for the elderly or children results in first aid, protect your family in anytime 【JCHENG’S After Service】30 days Money Refund,2 years 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 and Facebook, please search ‘JCHENG SECURITY’ and find us!, Manufacturer: Shenzhen Jing Cheng Digital Surveillance Co.,Ltd