Plantronics Ltd
Wootton Bassett, UK
0800 410014
+44 (0)1793 842200
Plantronics Ireland
Citywest Business Campus
Dublin 24
Office: +353 (0)1 4693725
Service ROI: 1800 551 896
UK: 0800 410014
Plantronics GmbH
Hürth, Deutschland
Service: 0800 9323 400
Technik: 0180 5007996
Österreich: 0800 242 500
Schweiz: 0800 932 340
Plantronics B.V.
Hoofddorp, Nederland
(0)0800 PLANTRONICS
0800 7526876 (NL)
00800 75268766 (BE/LUX)
Plantronics Sarl
Noisy-le-Grand, France
No Indigo: 0825 0825 99
0,15
e
TTC / mn
+33 (0)1 41 67 41 41
Nordic Region
Finland: 0201 550 550
Sverige: 031 28 95 00
Danmark: 44 35 05 35
Norge: 23 17 37 70
Plantronics Middle East,
Eastern Europe and Africa
+44 (0)1793 842443
Plantronics Iberia, S.L.
Madrid, España
902 41 51 91
+34 91 640 47 44
Plantronics Acoustics
Italia Srl
Milano, Italia
Numero Verde: 800 950934
Supr
aPlus/GB/0905/A4
© 2005 Plantronics Inc. All rights reserved. Plantronics, the logo design, Plantronics Sound Innovation, Call Clarity, SoundGuard Plus, SupraPlus and the voice tube clear colour dress and shape trade
dress are trademarks or registered trademarks of Plantronics, Inc.
www.plantronics.com
Key features
· Wideband frequency response for a more
natural sound.
· New T-bar support and ‘floating’ receivers for
all day wearing comfort.
· Lightweight, stylish and modern design.
· QuickCall feature for short-call convenience.
· Robust design & construction for exceptional
reliability.
· Wide choice of models to meet personal
preferences:
· Single-cable binaural or monaural receiver.
· Unique, replaceable voice tube or noise
cancelling microphone.
· Black with foam ear cushions or Silver with
leatherette ear cushions.
Technical data
Weight
Monaural
49 grams
Binaural
74 grams
Transmit Characteristics (typical)
Sensitivity @ 1kHz
-39 ± 3.5dBV/Pa
Frequency Range
200 to 4000Hz
DC Range
1.5 to 5V
Noise Cancellation
7dB (Noise-Cancelling models only)
Output Impedance
< 100Ω
Typical Test Conditions
1.8VDC, 3.3KΩ DC Resis, 3.3KΩ AC Load
Receive Characteristics
Sensitivity @ 1kHz
15dBPa/V (Monaural)
9dBPa/V (Binaural)
Frequency Range
100 to 4000Hz
Acoustic Limit
24dBPa
Input Impedance
150 ± 25Ω (Monaural)
300 ± 25Ω (Binaural)
Typical Test Conditions
100mV Drive, 10Ω Source Impedance
Measured on ITU-T Type 3.3 artificial ear
Specification subject to change
Description
Part Number
Monaural Voice Tube
H251/A
36828-01
P251/A
36829-01
Monaural Noise Cancelling
H251N/A
36832-01
P251N/A
36833-01
Binaural Voice Tube
H261/A
36830-01
P261/A
36831-01
Binaural Noise Cancelling
H261N/A
36834-01
P261N/A
36835-01
Monaural Voice Tube
H351/A
36828-02
P351/A 36829-03
Monaural Noise Cancelling
H351N/A
36832-02
P351N/A 36833-03
Binaural Voice Tube
H361/A
36830-02
P361/A 36831-03
Binaural Noise Cancelling
H361N/A
36834-02
P361N/A 36835-03
Black
Sil
ve
r
Monaural Voice Tube
H251 (H351)
Binaural Voice Tube
H261 (H361)
Monaural Noise Cancelling
H351N (H251N)
Binaural Noise Cancelling
H361N (H261N)
Sound Innovation™ for missions to the moon. And for everyday life on this planet, too.
In 1969, a Plantronics headset carried the historic first words from the moon: "That's one small step for man..." From the man on the moon to the
man on the street, Plantronics is an innovation leader dedicated to creating communication solutions for people who understand and appreciate the
real freedom of space. From outer space to inner space, find your space.
Space photo imagery courtesy of NASA
