This wired alarm is with 110 dB alarm sound This wired siren is specially for our 2G/GSM Alarm kit. Simple installation, Plug and Play Take durable plastic for housing material and top quality electronic components, so the performance is reliable and stable Products have a certain degree of dust, waterproof, seismic and other characteristics 【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