![52 N 305 PX Firewall Series [52 N/PX 305]](http://emacspruebaamerica.myshopify.com/cdn/shop/products/Drocas-45-Corto_86c955bc-1df4-4ce3-97c5-10fc8898f293_grande.png?v=1485183492)
Reference:
52 N/PX 305
52 Special Series Electric Lock for fire doors, NORMAL (N) with COMMUTATION (acoustic and light signals
