Series ET Speaker and Speaker Strobes

The Series ET Speakers and Speaker Strobes are designed to meet the critical needs of the life safety industry for effective emergency voice communications, tone signaling and visible signaling to alert the hearing impaired.

Distributed Module Placement

The AC-100 cabinetry facilitates the placement of ALM modules, ESU or Fiberoptic switches out at point of use. This eliminates long SLC or NAC wiring runs back to a central control panel.

Highly Survivable

Whether protecting a single floor or a an entire campus building, a single remote ALM module will continue to process local events in the event of a network communication failure. In addition, because of it’s isolation, the module will never go down for routine system maintenance in other sections of the system.

The high performance Series ET Speakers and Series ET Speaker Strobes provide high audio output, clear audibility, dual voltage (25/70 VRMS) capability and field selectable taps from 1/8 to 8 watts.

  • ET70-24MCW-FR
  • ET70-24MCW-FW
  • ET70-24MCW-FN
  • ET70-241575W-FR
  • ET70-241575W-FW
  • ET70-241575W-FN
  • ET70-24MCWH-FR
  • ET70-24MCWH-FW
  • ET70-24MCWH-FN
  • ET70WP-2475-FR
  • ET90-24MCC-FW
  • ET90-24MCC-FR
  • ET90-24MCC-FN
  • ET90-24MCCH-FW
  • ET90-24MCCH-FR
  • ET90-24MCCH-FN
  • ET70-R
  • ET70-W
  • ET70-N
  • ET90-R
  • ET90-W
  • ET90-N 

UL Max Current*

ET70/ET90
Speaker Strobes                            ET70 Strobe current – Wall Mount                       ET90 Strobe current – Ceiling Mount

241575W                24MCW                 24MCWH                         24MCC                  24MCCH

575cd     15cd 30cd 75cd 110cd     135cd 185cd            15cd 30cd 75cd         95cd 115cd 177cd

16-33 VDC                               0.090     0.060 0.092 0.165 0.220      0.300 0.420           0.065 0.105 0.189       0.249 0.300 0.420

ET70/ET90 UL Reverberant dBA @ 10 Feet**
watts                                  1/8                     1/4                 1/2              1             2            4              8
ET Speaker                         75.0                   78.0                81.0          84.0        87.0        90.0          93.0
ET Speaker Strobe              75.0                   78.0                81.0          84.0        87.0        90.0          93.0

The speaker appliances shall be Harding Series ET Speakers and speaker strobe appliances shall be Series ET Speaker Strobes or approved equals. The speakers shall be UL Listed under Standard 1480 for Fire Protective Service and speakers equipped with strobes shall be listed under UL Standard 1971 for Signaling Devices for the Hearing-Impaired. In addition, the strobes shall be certified to meet the requirements of FCC Part 15, Class B. All speakers shall be designed for a field selectable input of either 25 or 70 VRMS, with selectable power taps from 1/8 watt to 8 watts. All models shall have listed sound output of up to 93 dB at 10 feet and a listed frequency response of 400 to 4000 Hz. The speaker shall also incorporate a sealed back construction. All inputs shall employ terminals that accept #12 to #18 AWG wire sizes. The strobe portion of the appliance shall produce a flash rate of one (1) flash per second over the Regulated Voltage Range and shall incorporate a Xenon flashtube enclosed in a rugged Lexan® lens. The strobe shall be of low current design. Where, Multi-Candela Speaker Strobes are specified, the strobe intensity shall have field selectable settings and shall be rated per UL Standard 1971 at 15/30/75/110cd or 135/185cd for wall mount and 15/30/75/95 cd or 115/177cd for ceiling mount. The selector switch for selecting the candela shall be tamper resistant. The 1575 strobe shall be specified when 15 candela UL Standard 1971 listing with 75 candela onaxis is required (e.g. ADA compliance). When synchronization is required, the strobe portion of the appliance shall be compatible with Wheelock’s DSM Sync Modules, Wheelock Power Supplies or other manufacturers panels with built-in Harding Sync Protocol. The strobes shall not drift out of synchronization at any time during operation. If the sync module or Power Supply fails to operate, (i.e., contacts remain closed), the strobe shall revert to a non-synchronized flash rate. The speaker and speaker strobe appliances shall be designed for indoor surface or flush mounting. The speaker and speaker strobe shall incorporate a speaker mounting plate with a grille cover which is secured with two screws for a level, aesthetic finish and shall mount to standard electrical hardware requiring no additional trimplate or adapter. The finish of the Series ET speakers and speaker strobes shall be white, red or nickel plate. All speakers and speaker strobes shall be backward compatible.

About

The high performance Series ET Speakers and Series ET Speaker Strobes provide high audio output, clear audibility, dual voltage (25/70 VRMS) capability and field selectable taps from 1/8 to 8 watts.

  • ET70-24MCW-FR
  • ET70-24MCW-FW
  • ET70-24MCW-FN
  • ET70-241575W-FR
  • ET70-241575W-FW
  • ET70-241575W-FN
  • ET70-24MCWH-FR
  • ET70-24MCWH-FW
  • ET70-24MCWH-FN
  • ET70WP-2475-FR
  • ET90-24MCC-FW
  • ET90-24MCC-FR
  • ET90-24MCC-FN
  • ET90-24MCCH-FW
  • ET90-24MCCH-FR
  • ET90-24MCCH-FN
  • ET70-R
  • ET70-W
  • ET70-N
  • ET90-R
  • ET90-W
  • ET90-N 
Data Sheet
Specs

UL Max Current*

ET70/ET90
Speaker Strobes                            ET70 Strobe current – Wall Mount                       ET90 Strobe current – Ceiling Mount

241575W                24MCW                 24MCWH                         24MCC                  24MCCH

575cd     15cd 30cd 75cd 110cd     135cd 185cd            15cd 30cd 75cd         95cd 115cd 177cd

16-33 VDC                               0.090     0.060 0.092 0.165 0.220      0.300 0.420           0.065 0.105 0.189       0.249 0.300 0.420

ET70/ET90 UL Reverberant dBA @ 10 Feet**
watts                                  1/8                     1/4                 1/2              1             2            4              8
ET Speaker                         75.0                   78.0                81.0          84.0        87.0        90.0          93.0
ET Speaker Strobe              75.0                   78.0                81.0          84.0        87.0        90.0          93.0

Architects

The speaker appliances shall be Harding Series ET Speakers and speaker strobe appliances shall be Series ET Speaker Strobes or approved equals. The speakers shall be UL Listed under Standard 1480 for Fire Protective Service and speakers equipped with strobes shall be listed under UL Standard 1971 for Signaling Devices for the Hearing-Impaired. In addition, the strobes shall be certified to meet the requirements of FCC Part 15, Class B. All speakers shall be designed for a field selectable input of either 25 or 70 VRMS, with selectable power taps from 1/8 watt to 8 watts. All models shall have listed sound output of up to 93 dB at 10 feet and a listed frequency response of 400 to 4000 Hz. The speaker shall also incorporate a sealed back construction. All inputs shall employ terminals that accept #12 to #18 AWG wire sizes. The strobe portion of the appliance shall produce a flash rate of one (1) flash per second over the Regulated Voltage Range and shall incorporate a Xenon flashtube enclosed in a rugged Lexan® lens. The strobe shall be of low current design. Where, Multi-Candela Speaker Strobes are specified, the strobe intensity shall have field selectable settings and shall be rated per UL Standard 1971 at 15/30/75/110cd or 135/185cd for wall mount and 15/30/75/95 cd or 115/177cd for ceiling mount. The selector switch for selecting the candela shall be tamper resistant. The 1575 strobe shall be specified when 15 candela UL Standard 1971 listing with 75 candela onaxis is required (e.g. ADA compliance). When synchronization is required, the strobe portion of the appliance shall be compatible with Wheelock’s DSM Sync Modules, Wheelock Power Supplies or other manufacturers panels with built-in Harding Sync Protocol. The strobes shall not drift out of synchronization at any time during operation. If the sync module or Power Supply fails to operate, (i.e., contacts remain closed), the strobe shall revert to a non-synchronized flash rate. The speaker and speaker strobe appliances shall be designed for indoor surface or flush mounting. The speaker and speaker strobe shall incorporate a speaker mounting plate with a grille cover which is secured with two screws for a level, aesthetic finish and shall mount to standard electrical hardware requiring no additional trimplate or adapter. The finish of the Series ET speakers and speaker strobes shall be white, red or nickel plate. All speakers and speaker strobes shall be backward compatible.

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