Plantronics SHS1890-15 Amplifier and Headset

Plantronics SHS1890-15 Amplifier and Headset

Condition:
* Used, unable to test.
* Sold as-is. As pictured.

Additional Notes:
* Allows the use of any H-series headset top in 6-wire controller and dispatch operations.
* Push-to-talk switch with selectable locking or momentary operation.
* PJ-7 (equivalent to WE-425) connector.
* Choice of 3 different coil cord lengths.
* CE compliant.
* Operating current range: 10 to 120 mA dc
* Operating temperature: 0°C to 50°C (32°F to 122°F) 
* Storage temperature: -40°C to 66°C (-40° F to 151° F)
* Output level: -23.5 ± 5 dbV (37.6 to 119 mV RMS)
* Frequency range: 300 to 3300 Hz
* Distortion: < 5%, 300 to 3300 Hz
* DC resistance: > 35 ohms
* Impedance: 50 ohms
* Polarity: Nonpolar
* Terminal voltage: 2.3 Vdc @ 10 mA; 5.0 Vdc @ 100mA 
* Downward expander depth: 12 dB

Plantronics
SHS1890-15