//Zenitel|Obsolete
3005020010 CU-20.
//Zenitel|Obsolete
3005020010 CU-20.

CTU-20 Vingtor Talk back central control unit is the heart of the CTB-20 Talk-Back system; up to 20 users can be connected and it operates with a maximum of 4 CTB-20 and CTB-20W panel units. It is provided with an auxiliary input for alarm and an ouput for Public Address.

It is 24Vdc powered.

CU-20 is DNV type approved.

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