HORN SIREN,DUAL TONE SIREN: 1) DUAL TONE, SIX TONE,SINGLE TONE 2)Horn Speaker for ... Security System 3)ODM/OEM Service 4)RoHS Item Specifications: 1) Product Type: Horn Siren2) Product Model: ES-5013) Item Dimension ... Characteristics of Product Shape in Details: Price of factory,ES-501,ELECTRONIC SIREN,12V, 24V