The APU-72 Electronic Hook Switch- communicates electronically with the phone, eliminating the need for a conventional mechanical HL10 lifter.

The EHS adapter is unique to a specific Telephone application & Wireless product
APU-72 is designed for Plantronics Wireless CS500 series products.

Supported Phones 
Cisco 8961, 9951, 9971 / Nortel 120E, 1140E, 1150E, 1165E / Samsung SMT-i6000 series

Plantronics APU-72 Electronic Lifter - Cisco / Nortel Phones

SKU: 202578-01