... 4,OEM iswelcome 5 easy to install Intelligence fire control box/fire control box/fire alarm box --Technical Parameters:Rate voltage24V/220V,50HZMax ... window function, the back-up power source, other intelligent control function --Warranty Period: One to two years.--Yield: 3000 ... Remittance, L/C, T/T.--Description: Our intelligence fire control box with high quality and reasonable price. We sincerely ...