HONGCHANG(CHANGZHOU) ELECTRONIC CO.,LTD as a professional 115/120dB 6 tone siren alarm manufacturer and supplier in China, all the 115/120dB 6 tone siren alarm have passed the international industry certification standards, and you can be completely assured of quality. If you do not find your own Intent 115/120dB 6 tone siren alarm in our product list, you can also contact us, we can provide customized services.