Redesigned for clear, crisp, and audible reception, the Standard Horizon MLS-410LH Intercom Speaker acts as a secondary speaker/PA for receiving and transmitting, via the Push To Alert (PTA) button, with the VLH-3000A Loud Hailer. Compatible With:• Standard Horizon VLH-3000A Loud HailerTechnical Specifications:• Speaker Cable Length - 6.5' (2 M)• Dimensions (Diameter) - 5"• Maximum Power - 10 Watts• Speaker Impedance - 4 OhmIn the Box:• Speaker w/speaker wire• Mounting bracket• Instruction manual*Sold as an Individual Weather-resistant Sold as an Individual | Standard Horizon Intercom Speaker f/VLH-3000A Loud Hailer - Black