
CHP SERIES
HEAVY DUTY EAR DEFENDER HEADSET
Quick Start User Guide
V1.1
Desig ned in t he Uni ted Kingdom

Quick Start User Guide V1.1
CHP SERIES
Thank you for purchasing the Entel CHP
ear defender headset. This user guide will
explain the features of your headset, which
with care should provide many years of
trouble free operation.
The CHP Series headset provides handsfree communications in high ambient noise
environments.
FITTING
Place the ear defenders over your ear with
the comfort headband (or hardhat) on top
of your head. Position the adjustable boom
microphone to sit as close to your mouth
as possible. Attach the remote PTT unit to
your clothing around the lapel area.
OPERATING INSTRUCTIONS
• Ensure the radio is switched off, remove
the rubber dust cover and insert the CHP
connector onto the accessory socket.
Secure by turning the connector screw
clockwise until nger-tight (do not over
tighten). You can now turn on your radio.
• Press the PTT button to transmit and
release to receive.
• If you detach the CHP accessory, please
always replace the dust cover to protect
your radio’s accessory connector.
IMPORTANT
Always switch the radio off before
attaching an audio accessory. Models
that are certied to ATEX & IECEx have
been clearly labelled. Should, in the
course of use, any labels be removed
or become illegible please return the
accessory to Entel for relabelling.
SPECIFICATIONS
EAR DEFENDER HEADSET
Mic. element Electret condenser
Speaker impedance 32 ohm
Microphone impedance Max 2.2k ohm
Output sound pressure level 117dBA +/- 10dB
Rated input 10 mW
Maximum input 20 mW
PTT UNIT
Submersible IP67 (1 metre for 30 minutes)
Dimensions 76mm x 60mm x 24mm
Weight 142g
PACKING LIST
CHP headset
PTT unit

HARDHAT
HELME T ADAPTO R
EAR DEFENDER
PTT UN IT
Model Series
CHP950D DT500
CHP950HD DT500
CHP950HS DT500
CHP750D HT700 PTT750E None None
CHP750HD HT700 PTT750E None None
CHP750HS HT700 PTT750E None None
CHP450D HX PTT450E None None
CHP450HD HX PTT450E None None
CHP450HS HX PTT450E None None
CHP450D/DX DX, DN PTT450E/DX None None
CHP450HD/DX DX, DN PTT450E/DX None None
CHP450HS/DX DX, DN PTT450E/DX None None
DT800, DT900
HT500
HT800, HT900
DT800, DT900
HT500
HT800, HT900
DT800, DT900
HT500
HT800, HT900
PTT
model no.
PTT-E/DT9
PTT-E/DT9
PTT950E
PTT950E
PTT-E/DT9
PTT-E/DT9
PTT950E
PTT950E
PTT-E/DT9
PTT-E/DT9
PTT950E
PTT950E
BOOM MICROPHON E
Above approvals apply to specic models only
IS cert. no. Approval
IECEx BAS 18.0094X
Baseefa18ATEX0152X
IECExSIR10.0097X
Sira 10ATEX2066X
IECEx BAS 18.0094X
Baseefa18ATEX0152X
IECExSIR10.0097X
Sira 10ATEX2066X
IECEx BAS 18.0094X
Baseefa18ATEX0152X
IECExSIR10.0097X
Sira 10ATEX2066X
IECEx
ATEX
IECEx
ATEX
IECEx
ATEX
IECEx
ATEX
IECEx
ATEX
IECEx
ATEX

Contact
For more information about our products please contact us:
+44 (0)20 8236 0 032
All Rights Reserved. Copyright Entel UK Ltd.