... /ODM service 3. 1 year warranty alarm 4. CE certificate security emergency alarm Model:HHS-2100Voltage: 12VPower : 100-300wImpedance: 4Ω,6 ... ,emergency ,rescue and project use .It has different tone for security, fire fighting, rescuing, engineering, clearing the way, protocol, siren and ... interested pleased feel free to contact us for more product information.