FCC ID 2BEWX-TTFM-81G
Smart Sentry
by Zhejiang Lingzhu Technology Co., Ltd.
Grantee Code: 2BEWX Product Code: TTFM81G
Latest application date: 2026-04-15
FCC ID Device Details
| FCC ID | 2BEWX-TTFM-81G |
|---|---|
| Mirrors | fcc.id | gov | fccid.ai |
| Grantee Code | 2BEWX |
| Product Code | TTFM81G |
| Applicant Business | Zhejiang Lingzhu Technology Co., Ltd. 🇨🇳 |
| Related Domains |  smartlz.com  tuya.com |
| Equipment Class | Smart Sentry |
| Test Firm | Sporton International Inc. (Kunshan) |
Operating Frequencies
| Frequency Range | Application Purpose | Final Action Date |
|---|---|---|
| 2402-2480 MHz | Original Equipment | 2026-04-15 |
Exhibits
| Document | Type | Available | File |
|---|---|---|---|
| 2BEWX-TTFM-81G_Label | ID Label/Location Info | 2026-04-15 | PDF 44.5 KB |
| 2BEWX-TTFM-81G_Label Location | ID Label/Location Info | 2026-04-15 | PDF 41 KB |
| 2BEWX-TTFM-81G_Antenna Spec | Test Report | 2026-04-15 | PDF 356.6 KB |
| 2BEWX-TTFM-81G_TestRpt_DTS_BLE_r1 | Test Report | 2026-04-15 | PDF 4.8 MB |
| 2BEWX-TTFM-81G_cvrltr_Attestation Statements US agent | Attestation Statements | 2026-04-15 | PDF 90.9 KB |
| 2BEWX-TTFM-81G_cvrltr_Certification_2.911d5(i)&(ii) | Attestation Statements | 2026-04-15 | PDF 78.7 KB |
| 2BEWX-TTFM-81G_cvrltr_Long-term Confidentiality | Cover Letter(s) | 2026-04-15 | PDF 70 KB |
| 2BEWX-TTFM-81G_cvrltr_POA | Cover Letter(s) | 2026-04-15 | PDF 172 KB |
| 2BEWX-TTFM-81G_cvrltr_Short-term Confidentiality | Cover Letter(s) | 2026-04-15 | PDF 77.1 KB |
| 2BEWX-TTFM-81G_TestRpt_RF Exposure_r1 | RF Exposure Info | 2026-04-15 | PDF 622.9 KB |
| 2BEWX-TTFM-81G_User Manual Metadata only | Users Manual | 2026-10-13 | PDF 1.8 MB |
| 2BEWX-TTFM-81G_InPho Metadata only | Internal Photos | 2026-10-13 | PDF 1 MB |
| 2BEWX-TTFM-81G_ExPho Metadata only | External Photos | 2026-10-13 | PDF 1.8 MB |
| 2BEWX-TTFM-81G_Tsup_Antenna Metadata only | Test Setup Photos | 2026-10-13 | PDF 622.9 KB |
| 2BEWX-TTFM-81G_Tsup_DTS_BLE Metadata only | Test Setup Photos | 2026-10-13 | PDF 519.8 KB |
| 2BEWX-TTFM-81G_BlckDic Metadata only | Block Diagram | PDF 79.7 KB | |
| 2BEWX-TTFM-81G_SchemDic Metadata only | Schematics | PDF 66.1 KB | |
| 2BEWX-TTFM-81G_OpDes Metadata only | Operational Description | PDF 61.2 KB | |
| 2BEWX-TTFM-81G_Tune Up Metadata only | Parts List/Tune Up Info | PDF 55.8 KB |
Application Information
| Application ID | HyZCeYCFNFQJLp788J7NUg== |
|---|---|
| Final Action Date | 2026-04-15 |
| Application Purpose | Original Equipment |
| Applicant FRN | 0034841213 |
| Model | TTFM-81G |
| Frequency Range | 2402-2480 MHz |
| Equipment Class | DTS - Digital Transmission System |
| Device Description | Smart Sentry |
| Responsible Party | Linyun Li, lilinyun@smartlz.com , 0571-86581786 |
| Non-Technical Contact | Jingchao Wang, Tuya Smart Inc., jake.wang@tuya.com , (818) 699-5031 |
| Test Firm | Mark Qu, Sporton International Inc. (Kunshan), markqu@sporton-lab.com  , +86 0512-57900158 |
| TCB Email | QA65@Sporton-USA.com  |
| TCB Scope | A4: UNII devices & low power transmitters using spread spectrum techniques |
| Short-Term Confidentiality | Yes |
| Long-Term Confidentiality | Yes |
| Modular Equipment | Does not apply |
| Composite Device | No |
| Cognitive Radio | No |
| Authorization Waiver | No |
| Authorization Waiver Approved | No |
| Section 5301 Certification | Yes |
| Related OET Knowledge DataBase Inquiry | No |
Applications
| Application ID | Date | Purpose |
|---|---|---|
| HyZCeYCFNFQJLp788J7NUg== | 2026-04-15 | Original Equipment |
Equipment Authorization
| Frequency | Output | Rules |
|---|---|---|
| 2402-2480 MHz | 0.0015 | 15C |
Grants
TCB Grant - Application HyZCeYCFNFQJLp788J7NUg==
| TCB | GRANT OF EQUIPMENT AUTHORIZATION |
TCB |
| Certification | ||
| Issued Under the Authority of the | ||
| Federal Communications Commission | ||
| By: |
|
Sporton International (USA) Inc. 1175 Montague Expressway Milpitas, CA 95035 |
Date of Grant: 04/15/2026 Application Dated: 04/13/2026 |
| Zhejiang Lingzhu Technology Co., Ltd. |
| Room 302,No 1 Building Huace Center,Xihu District |
| Hangzhou, 310000 China |
| Attention: Linyun Li , Manager |
| NOT TRANSFERABLE |
| EQUIPMENT AUTHORIZATION is hereby issued to the named GRANTEE, and is VALID ONLY for the equipment identified hereon for use under the Commission's Rules and Regulations listed below. |
| FCC IDENTIFIER: | 2BEWX-TTFM-81G |
| Name of Grantee: | Zhejiang Lingzhu Technology Co., Ltd. |
| Equipment Class: | Digital Transmission System |
| Notes: | Smart Sentry |
| Grant Notes | FCC Rule Parts | Frequency Range (MHZ) | Output Watts | Frequency Tolerance | Emission Designator |
| 15C | 2402.0 - 2480.0 | 0.0015 |
| Output Power listed is conducted. This device meets the SAR Test Exclusion threshold specified in KDB447498 and since then, it is authorized for portable operation. |