David Clark Company
Two-Way Communications

Series 6700 Headsets

Series 6700 Radio Direct headsets provide clear communications and hearing protection for high-noise environments. These headsets connect directly to portable radios with no adapter required. H6700 Series headsets are also Intrinsically Safe (IS) and carry FM Approval for those areas that require Intrinsic Safety ratings, while providing the same rugged durability and comfort afforded by all David Clark Company headsets. Ideal for oil rigs and gas refineries, chemical and paper plants―virtually any potentially explosive industrial or manufacturing environment.

Modular Configurations provide even greater flexibility with headsets utilizing interchangeable communication cords for connection to a wide variety of radios.

WARNING: The Series 6700 is Intrinsically Safe (IS) when connected to an IS approved radio. When connected to an IS approved radio, the resulting IS level is that of the lowest of the two. When connected to a non-IS radio the resulting system is not IS approved.

Model H6740-34
click to enlarge

Model H6740-34

Behind the Head (BTH) Style - No Adapter Needed
  • Connect directly to portable radio with no adapter required
  • Rated Intrinsically Safe with FM Approval (Approved to IS / CSA / ATEX / IECex standards)
  • Marine-grade, stainless steel hardware and rugged construction
  • BTH style for applications requiring hard hats or protective headgear
  • PTT button conveniently located on headset ear dome
  • Undercut, Comfort-Gel ear seals for maximum comfort
  • Durable 6-foot extended coil cord terminated with radio-specific connector
  • Part Number: 40416G-60

Parts List

 
6700 En Espanol
 
6700 Series Radio Direct Intrinsically Safe
Noise Attenuation Data
NRR
23 dB
Frequency (Hz) 125 250 500 1000 2000 3150 4000 6300 8000
Attenuation (dB) 14.1 21.9 29.4 32.0 29.7 35.2 36.2 38.1 37.4
Standard Deviation 2.5 2.5 3.0 2.7 2.2 1.7 2.5 2.9 2.8
Model H6740-35
click to enlarge

Model H6740-35

Behind the Head (BTH) Style - No Adapter Needed
  • Connect directly to portable radio with no adapter required
  • Rated Intrinsically Safe with FM Approval (Approved to IS / CSA / ATEX / IECex standards)
  • Marine-grade, stainless steel hardware and rugged construction
  • BTH style for applications requiring hard hats or protective headgear
  • PTT button conveniently located on headset ear dome
  • Undercut, Comfort-Gel ear seals for maximum comfort
  • Durable 6-foot extended coil cord terminated with radio-specific connector
  • Part Number: 40416G-55

Parts List

 
6700 En Espanol
 
6700 Series Radio Direct Intrinsically Safe
Noise Attenuation Data
NRR
23 dB
Frequency (Hz) 125 250 500 1000 2000 3150 4000 6300 8000
Attenuation (dB) 14.1 21.9 29.4 32.0 29.7 35.2 36.2 38.1 37.4
Standard Deviation 2.5 2.5 3.0 2.7 2.2 1.7 2.5 2.9 2.8
Model H6740-51
click to enlarge

Model H6740-51

Behind the Head (BTH) Style - No Adapter Needed
Headgear Attachable Style
  • Connect directly to portable radio with no adapter required
  • Rated Intrinsically Safe with FM Approval (Approved to IS / CSA / ATEX / IECex standards)
  • Marine-grade, stainless steel hardware and rugged construction
  • BTH style for applications requiring hard hats or protective headgear
  • PTT button conveniently located on headset ear dome
  • Undercut, Comfort-Gel ear seals for maximum comfort
  • Durable 6-foot extended coil cord terminated with radio-specific connector
  • Part Number: 40416G-62

Please note that the VOX/PTT switch on the H6200-M headset must be in PTT mode when using a Mototrbo radio in it's VOX mode. The radio will do the rest. If the PTT button is pressed it will put the radio back in PTT mode. to return to VOX mode simply change the channel and then back again and it will reactivate VOX mode.

Parts List


 
6700 En Espanol
 
6700 Series Radio Direct Intrinsically Safe
Noise Attenuation Data
NRR
23 dB
Frequency (Hz) 125 250 500 1000 2000 3150 4000 6300 8000
Attenuation (dB) 14.1 21.9 29.4 32.0 29.7 35.2 36.2 38.1 37.4
Standard Deviation 2.5 2.5 3.0 2.7 2.2 1.7 2.5 2.9 2.8
Model H6740-52
click to enlarge

Model H6740-52

Behind the Head (BTH) Style - No Adapter Needed
  • Connect directly to portable radio with no adapter required
  • Rated Intrinsically Safe with FM Approval (Approved to IS / CSA / ATEX / IECex standards)
  • Marine-grade, stainless steel hardware and rugged construction
  • BTH style for applications requiring hard hats or protective headgear
  • PTT button conveniently located on headset ear dome
  • Undercut, Comfort-Gel ear seals for maximum comfort
  • Durable 6-foot extended coil cord terminated with radio-specific connector
  • Part Number: 40416G-59

Parts List

 
6700 En Espanol
 
6700 Series Radio Direct Intrinsically Safe
Noise Attenuation Data
NRR
23 dB
Frequency (Hz) 125 250 500 1000 2000 3150 4000 6300 8000
Attenuation (dB) 14.1 21.9 29.4 32.0 29.7 35.2 36.2 38.1 37.4
Standard Deviation 2.5 2.5 3.0 2.7 2.2 1.7 2.5 2.9 2.8
Model H6780-51
click to enlarge

Model H6780-51

Behind the Head (BTH) Style - No Adapter Needed
  • Connect directly to portable radio with no adapter required
  • Rated Intrinsically Safe with FM Approval (Approved to IS / CSA / ATEX / IECex standards)
  • Marine-grade, stainless steel hardware and rugged construction
  • Cap attachable style for applications requiring hard hats or protective headgear
  • PTT button conveniently located on headset ear dome
  • Durable 6-foot extended coil cord terminated with radio-specific connector
  • Undercut, Comfort-Gel ear seals for maximum comfort
  • Hard hat not included
  • Part Number: 40416G-62

Works with VOX enabled MotoTurbo radios. If PTT button is pushed it will return the radio to PTT mode. Radio can be returned to VOX mode by changing the channel and then back again
Parts List


 
6700 En Espanol
 
6700 Series Radio Direct Intrinsically Safe



Modular headsets

Model H6720-M
click to enlarge

Model H6720-M

Behind the Head (BTH) Style - Shielded Microphone
  • Rated Intrinsically Safe with FM Approval (Approved to IS / CSA / ATEX / IECex standards)
  • PTT button conveniently located on headset ear dome
  • Behind-the Head, dual ear style
  • Undercut, Comfort-Gel ear seals for maximum comfort
  • Quality components and rugged construction
  • Part Number: 40416G-63

Also available: U6710 inline PTT body switch, see 'Modular' tab at bottom of selector guide page.

 
6700 En Espanol
 
6700 Series Radio Direct Intrinsically Safe
Noise Attenuation Data
NRR
23 dB
Frequency (Hz) 125 250 500 1000 2000 3150 4000 6300 8000
Attenuation (dB) 14.1 21.9 29.4 32.0 29.7 35.2 36.2 38.1 37.4
Standard Deviation 2.5 2.5 3.0 2.7 2.2 1.7 2.5 2.9 2.8
Model H6740-M
click to enlarge

Model H6740-M

Behind the Head (BTH) Style
  • Rated Intrinsically Safe with FM Approval (Approved to IS / CSA / ATEX / IECex standards)
  • PTT button conveniently located on headset ear dome
  • Behind-the Head, dual ear style
  • Undercut, Comfort-Gel ear seals for maximum comfort
  • Quality components and rugged construction
  • Part Number: 40416G-58

Also available: U6710 inline PTT body switch, see 'Modular' tab at bottom of selector guide page.

Parts List

 
6700 En Espanol
 
6700 Series Radio Direct Intrinsically Safe
Noise Attenuation Data
NRR
23 dB
Frequency (Hz) 125 250 500 1000 2000 3150 4000 6300 8000
Attenuation (dB) 14.1 21.9 29.4 32.0 29.7 35.2 36.2 38.1 37.4
Standard Deviation 2.5 2.5 3.0 2.7 2.2 1.7 2.5 2.9 2.8