| Brand | Device Name | Model | Type | Certification Date |
|---|---|---|---|---|
| Koss Corporation | Bluetooth True Wireless Earbuds | TWS250I | FCC ID  |
2021-04-01 |
FCC Application Details
| Equipment | Bluetooth True Wireless Earbuds |
| FRN | 0014837306 |
| Grantee Code | L76 |
| Product Code | -TWS250I |
| Applicant Business | Koss Corporation |
| Business Address | 4129 N. Port Washington Avenue , Milwaukee, Wisconsin United States 53212 |
| TCB Scope | A4: UNII devices & low power transmitters using spread spectrum techniques |
| TCB Email | [email protected] |
| Applicant | Benton Geimer – Electroacoustic Engineer |
| Applicant Phone | |
| Applicant Fax | 4149648615 |
| Applicant Email | [email protected] |
| Applicant MailStop | |
| Test Firm | TUV SUD Cert & Testing (China) Co., Ltd. |
| Test Firm Contact | Harry Zhou |
| Test Firm Phone | |
| Test Firm Fax | |
| Test Firm Email | [email protected] |
| Certified By | Benton Geirner – |
Further Details May Be Available From: fcc.id/L76TWS250I or 
fcc.report/FCC-ID/L76TWS250I
| Description | Exhibit Type | File Type | Display Type | File Size | Submission Date | Date Available |
|---|---|---|---|---|---|---|
 Document 5169974 Mirror: FCCID.io - 5169974 Internal Photos | Internal Photos | Adobe Acrobat PDF | 1.66 M | 2021-03-22 | 2021-09-18 | |
| Document 5169973 Mirror: FCCID.io - 5169973 Internal Photos | Users Manual | Adobe Acrobat PDF | 1.66 M | 2021-03-22 | 2021-09-18 | |
 Document 5169972 Mirror: FCCID.io - 5169972 User Manual of TWS250i | Users Manual | Adobe Acrobat PDF | 5.16 M | 2021-03-22 | 2021-09-18 | |
 Document 5169971 Mirror: FCCID.io - 5169971 Test Setup Photos | Test Setup Photos | Adobe Acrobat PDF | 282.26 K | 2021-03-22 | 2021-09-18 | |
 Document 5169970 Mirror: FCCID.io - 5169970 External Photos | External Photos | Adobe Acrobat PDF | 993.68 K | 2021-03-22 | 2021-09-18 | |
 Document 5169969 Mirror: FCCID.io - 5169969 Product Identical Declaration Letter | Cover Letter(s) | Adobe Acrobat PDF | 55.72 K | 2021-03-22 | 2021-04-01 | |
 Document 5169968 Mirror: FCCID.io - 5169968 FCC Confidentiality Letter | Cover Letter(s) | Adobe Acrobat PDF | 69.17 K | 2021-03-22 | 2021-04-01 | |
 Document 5169967 Mirror: FCCID.io - 5169967 Declaration Letter for Model Differences | Cover Letter(s) | Adobe Acrobat PDF | 113.02 K | 2021-03-22 | 2021-04-01 | |
 Document 5169966 Mirror: FCCID.io - 5169966 RF Exposure Info | RF Exposure Info | Adobe Acrobat PDF | 82.7 K | 2021-03-22 | 2021-04-01 | |
 Document 5169965 Mirror: FCCID.io - 5169965 Test Report | Test Report | Adobe Acrobat PDF | 4.46 M | 2021-03-22 | 2021-04-01 | |
 Document 5169964 Mirror: FCCID.io - 5169964 Label and location of TWS250i | ID Label/Location Info | Adobe Acrobat PDF | 589.95 K | 2021-03-22 | 2021-04-01 | |
 Document 5169963 Mirror: FCCID.io - 5169963 Label and location of HKTWS158 | ID Label/Location Info | Adobe Acrobat PDF | 627.93 K | 2021-03-22 | 2021-04-01 | |
Test Setup Photos | Test Setup Photos | Adobe Acrobat PDF | 282.26 K | 2021-03-22 | 2021-09-18 | |
User Manual of TWS250i | Users Manual | Adobe Acrobat PDF | 5.16 M | 2021-03-22 | 2021-09-18 | |
Block Diagram | Block Diagram | Adobe Acrobat PDF | 11.83 K | 2021-03-22 | ||
Declaration Letter for Model Differences | Cover Letter(s) | Adobe Acrobat PDF | 113.02 K | 2021-03-22 | 2021-04-01 | |
Schematic | Schematics | Adobe Acrobat PDF | 28.94 K | 2021-03-22 | ||
RF Exposure Info | RF Exposure Info | Adobe Acrobat PDF | 82.7 K | 2021-03-22 | 2021-04-01 | |
Product Identical Declaration Letter | Cover Letter(s) | Adobe Acrobat PDF | 55.72 K | 2021-03-22 | 2021-04-01 | |
PCB Layout Part 2 | Schematics | Adobe Acrobat PDF | 249.11 K | 2021-03-22 | ||
PCB Layout Part 1 | Schematics | Adobe Acrobat PDF | 249.11 K | 2021-03-22 | ||
Parts List Part 2 | Parts List/Tune Up Info | Adobe Acrobat PDF | 97.79 K | 2021-03-22 | ||
Parts List Part 1 | Parts List/Tune Up Info | Adobe Acrobat PDF | 97.33 K | 2021-03-22 | ||
Operational Description | Operational Description | Adobe Acrobat PDF | 173.11 K | 2021-03-22 | ||
Label and location of TWS250i | ID Label/Location Info | Adobe Acrobat PDF | 589.95 K | 2021-03-22 | 2021-04-01 | |
Label and location of HKTWS158 | ID Label/Location Info | Adobe Acrobat PDF | 627.93 K | 2021-03-22 | 2021-04-01 | |
Internal Photos | Users Manual | Adobe Acrobat PDF | 1.66 M | 2021-03-22 | 2021-09-18 | |
FCC Confidentiality Letter | Cover Letter(s) | Adobe Acrobat PDF | 69.17 K | 2021-03-22 | 2021-04-01 | |
External Photos | External Photos | Adobe Acrobat PDF | 993.68 K | 2021-03-22 | 2021-09-18 | |
Test Report | Test Report | Adobe Acrobat PDF | 4.46 M | 2021-03-22 | 2021-04-01 |
Related FCC IDs:
- L76-TWS250I - Koss Corporation Bluetooth True Wireless Earbuds [-TWS250I]
- MMF8485SESM - Sato Corporation M8485Se/M8490Se printer with MP9310 RFID reader [8485SESM]