The Plantronics APS-1 Electronic Hook Switch module enables a wireless headsets user to place or receive a call without the need to lift the handset, thereby eliminating the need for a mechanical device such as the Plantronics HL10 handset lifter.

The APS-1 model, part number 38347-01, is compatible with the full CS line of Plantronics wireless headsets such as the Plantronics CS55, CS70N, CS351N, CS361N, and the following phone models:

• Siemens Optipoint 410 with acoustic adapter
• Siemens Optipoint 420 with acoustic adapter
• Siemens Optipoint 500 with acoustic adapter
• Siemens Optipoint 600 with acoustic adapter
• Siemens OpenStage 40
• Siemens OpenStage 60
• Siemens OpenStage 80
• Funkwerk CS290U
• Funkwerk CS410
• Funkwerk CS410U
• Funkwerk IP-S400

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