![52 N 305 MX Firewall Series [52 N/MX 305]](http://emacspruebaamerica.myshopify.com/cdn/shop/products/dorcas45_largo_dfee971e-7898-4005-80aa-22db42a21170_grande.png?v=1485183494)
Reference:
52 N/MX 305
52 Special Series Electric Lock for fire doors, NORMAL (N) with COMMUTATION (acoustic and light signals
