POLY SHS 2780-15 SHS 1890-15

The HP Poly SHS1890 Push-to-Talk Adapter allows the use of the Poly H-series headset top in a six-wire controller and dispatch operations. It features a carbon-type microphone amplifier, PJ-7 connector and push-to-talk switch with selectable locking or momentary operation. It enables the use of a wide variety of receiver styles. This adapter features an acoustic limiter across the receiver transducer. The microphone/amplifier has a frequency range of 300 Hz to 3300 Hz.