| Brand | Device Name | Model | Type | Certification Date |
|---|---|---|---|---|
| Guangdong Tianmai IoT Technology Co., Ltd | Wireless doorbell | M557 | FCC ID  |
2025-04-22 |
FCC Application Details
| Equipment | Wireless doorbell |
| FRN | 0035852706 |
| Grantee Code | 2BKI4 |
| Product Code | -M557 |
| Applicant Business | Guangdong Tianmai IoT Technology Co., Ltd |
| Business Address | Room 401, Building 3, No. 8 Jinshun Road, Fenggang Town, Dongguan City, Guangdong Province, N/A China |
| TCB Scope | A1: Low Power Transmitters below 1 GHz (except Spread Spectrum), Unintentional Radiators, EAS (Part 11) & Consumer ISM devices |
| TCB Email | [email protected] |
| Applicant | QingLong Yang – |
| Applicant Phone | |
| Applicant Fax | / |
| Applicant Email | [email protected] |
| Applicant MailStop | |
| Test Firm | Shenzhen HTT Technology Co.,Ltd. |
| Test Firm Contact | Kevin Yang |
| Test Firm Phone | |
| Test Firm Fax | |
| Test Firm Email | [email protected] |
| Certified By | QingLong Yang – Manager |
Further Details May Be Available From: fcc.id/2BKI4M557 or 
fcc.report/FCC-ID/2BKI4M557
| Description | Exhibit Type | File Type | Display Type | File Size | Submission Date | Date Available |
|---|---|---|---|---|---|---|
 Document 8224474 Mirror: FCCID.io - 8224474 User Manual | Users Manual | Adobe Acrobat PDF | 330.79 K | 2025-04-22 | 2025-04-22 | |
 Document 8224473 Mirror: FCCID.io - 8224473 USA-LocalRepLetter_V1.1 - 2BKI4-M557 | Attestation Statements | Adobe Acrobat PDF | 369 K | 2025-04-22 | 2025-04-22 | |
 Document 8224471 Mirror: FCCID.io - 8224471 USA-CoveredEquipmentLetter-Combined_V1.1 | Attestation Statements | Adobe Acrobat PDF | 121.54 K | 2025-04-22 | 2025-04-22 | |
 Document 8224470 Mirror: FCCID.io - 8224470 USA-ConfidentialityRequestLetter_V0.1 | Cover Letter(s) | Adobe Acrobat PDF | 102.1 K | 2025-04-22 | 2025-04-22 | |
 Document 8224467 Mirror: FCCID.io - 8224467 Label and Label Location | ID Label/Location Info | Adobe Acrobat PDF | 96.11 K | 2025-04-22 | 2025-04-22 | |
 Document 8224466 Mirror: FCCID.io - 8224466 HTT2025031251F02_RF Exposure-info | RF Exposure Info | Adobe Acrobat PDF | 342.84 K | 2025-04-22 | 2025-04-22 | |
 Document 8224465 Mirror: FCCID.io - 8224465 HTT2025031251F01_Test Report-433 | Test Report | Adobe Acrobat PDF | 1.07 M | 2025-04-22 | 2025-04-22 | |
 Document 8224463 Mirror: FCCID.io - 8224463 appendix II EUT Internal photo | Internal Photos | Adobe Acrobat PDF | 399.85 K | 2025-04-22 | 2025-04-22 | |
 Document 8224462 Mirror: FCCID.io - 8224462 appendix II EUT External photo | External Photos | Adobe Acrobat PDF | 571.76 K | 2025-04-22 | 2025-04-22 | |
 Document 8224461 Mirror: FCCID.io - 8224461 appendix I EUT Test Setup photo | Test Setup Photos | Adobe Acrobat PDF | 126.47 K | 2025-04-22 | 2025-04-22 | |
 Document 8224460 Mirror: FCCID.io - 8224460 Antenna Specification | Test Report | Adobe Acrobat PDF | 572.09 K | 2025-04-22 | 2025-04-22 | |
schematic | Schematics | Adobe Acrobat PDF | 45.26 K | 2025-04-22 | ||
USA-DueDigilenceLetter_V0.1 | Operational Description | Adobe Acrobat PDF | 146.57 K | 2025-04-22 | ||
Operation Description | Operational Description | Adobe Acrobat PDF | 122.97 K | 2025-04-22 | ||
Block diagram | Block Diagram | Adobe Acrobat PDF | 82.02 K | 2025-04-22 | ||
USA-CoveredEquipmentLetter-Combined_V1.1 | Attestation Statements | Adobe Acrobat PDF | 121.54 K | 2025-04-22 | 2025-04-22 | |
USA-LocalRepLetter_V1.1 - 2BKI4-M557 | Attestation Statements | Adobe Acrobat PDF | 369 K | 2025-04-22 | 2025-04-22 | |
USA-ConfidentialityRequestLetter_V0.1 | Cover Letter(s) | Adobe Acrobat PDF | 102.1 K | 2025-04-22 | 2025-04-22 | |
appendix II EUT External photo | External Photos | Adobe Acrobat PDF | 571.76 K | 2025-04-22 | 2025-04-22 | |
Label and Label Location | ID Label/Location Info | Adobe Acrobat PDF | 96.11 K | 2025-04-22 | 2025-04-22 | |
appendix II EUT Internal photo | Internal Photos | Adobe Acrobat PDF | 399.85 K | 2025-04-22 | 2025-04-22 | |
HTT2025031251F02_RF Exposure-info | RF Exposure Info | Adobe Acrobat PDF | 342.84 K | 2025-04-22 | 2025-04-22 | |
Antenna Specification | Test Report | Adobe Acrobat PDF | 572.09 K | 2025-04-22 | 2025-04-22 | |
HTT2025031251F01_Test Report-433 | Test Report | Adobe Acrobat PDF | 1.07 M | 2025-04-22 | 2025-04-22 | |
appendix I EUT Test Setup photo | Test Setup Photos | Adobe Acrobat PDF | 126.47 K | 2025-04-22 | 2025-04-22 | |
User Manual | Users Manual | Adobe Acrobat PDF | 330.79 K | 2025-04-22 | 2025-04-22 |
Related FCC IDs:
- 2BKI4-M557 - Guangdong Tianmai IoT Technology Co., Ltd Wireless doorbell [-M557]