The Siemens Optiset E Key module expands the telephone capabilities by providing users with single-button access to speed dial numbers or DSS (Direct Station Selection) to internal extensions. The Siemens Optiset E Key modules 16 programmable features keys with LEDs can increase call-handling efficiency and accuracy when used at an attendant station. Up to four Siemens Optiset E Key modules can be connected to the Siemens Optiset E Advance Plus, Siemens Optiset E Advance Conference or Siemens Optiset E Advance Memory models for a total of 64 additional feature keys.

• Expands phone capabilities
• Easily attaches to Siemens Optiset E Advance Plus, Siemens Optiset E Advance Conference or Siemens Optiset E Advance Memory models
• Adds 16 key buttons