The work aid for anyone managing a large number of phone numbers and various functions. The System Telephone Extension STE 40 features 30 freely programmable keys, including LED support.

You can see at a glance which participants are currently speaking, allowing you to perfectly coordinate incoming calls. This saves your callers from long wait times and highlights your professionalism. The STE 40 can only be operated in conjunction with the System Telephones ST 31/ST 40. A maximum of four STE 40 can be connected to one system telephone. The total number of connectable STE 40 units depends on the telephone system used.

Note: Must be operated with the appropriate system firmware. On the telephone systems AS 40 P, AS 4000, and AS 100 IT, a function is only possible in conjunction with the processor unit P 400-1 or P 400 IT.

STE 40 is available in black, white, and silver.

An optional power adapter is required for the operation of the STE 40.