Combo SPD: The main features of flow capacity ★ 
 ★ Multi-level protection 
 ★ core components adopt international famous brand, excellent performance 
 ★ fast response 
 ★ excellent signal transmission performance 
 ★ residual depression 
 ★ simple structure, easy installation and maintenance Applications: for transmission of video signals through coaxial cable over-voltage protection related equipment, such as video surveillance systems, security systems.