1. FCC ID
  2. 2ACP4
  3. 2ACP4CBT780

FCC ID 2ACP4CBT780

True wireless Bluetooth Earphones

by Sentry Industries limited

Grantee Code: 2ACP4   Product Code: CBT780
Latest application date: 2026-07-14

FCC ID Device Details

FCC ID2ACP4CBT780
Mirrorsfcc.id | gov | fccid.ai
Grantee Code2ACP4
Product CodeCBT780
Applicant BusinessSentry Industries limited 🇨🇳
Related Domains sentryindustries.com
Equipment ClassTrue wireless Bluetooth Earphones
Test FirmShenzhen Tongzhou Testing Co., Ltd.

Operating Frequencies

Frequency RangeApplication PurposeFinal Action Date
2402-2480 MHzOriginal Equipment2026-07-14

Exhibits

DocumentTypeAvailableFile
13_BT780 Users ManualUsers Manual2026-07-14PDF 1.8 MB
09_BT780 Internal PhotosInternal Photos2026-07-14PDF 951.3 KB
08_BT780 External PhotosExternal Photos2026-07-14PDF 1.1 MB
07_BT780 Label Sample and LocationID Label/Location Info2026-07-14PDF 141.8 KB
06_BT780 Long-Confidential RequestBlock Diagram2026-07-14PDF 119.8 KB
15_BT780 Test Setup PhotosTest Setup Photos2026-07-14PDF 619.8 KB
14_BT780 Test Report DSS BT R1Test Report2026-07-14PDF 3.2 MB
14_BT780 Test Report DSS BT appendixTest Report2026-07-14PDF 5.7 MB
16_BT780 Antenna SpecificationTest Report2026-07-14PDF 282.4 KB
02_BT780 Covered Equipment Certification Attestation LetterAttestation Statements2026-07-14PDF 88 KB
03_BT780 U.S. Agent Designation Attestation LetterAttestation Statements2026-07-14PDF 473.4 KB
04_BT780 Authorization-AgentCover Letter(s)2026-07-14PDF 181.8 KB
05_BT780 Authorization-CTCover Letter(s)2026-07-14PDF 125.5 KB
18_BT780 Models Difference DeclarationCover Letter(s)2026-07-14PDF 362.6 KB
17_BT780 RF Exp InfoRF Exposure Info2026-07-14PDF 316.1 KB
11_BT780 Block Diagram Metadata onlyBlock DiagramPDF 110.9 KB
12_BT780 Schematics Metadata onlySchematicsPDF 57.4 KB
10_BT780 Operational Description Metadata onlyOperational DescriptionPDF 193.5 KB

Application Information

Application IDjz+dgXmBDc7jz7wW1KHZ2w==
Final Action Date2026-07-14
Application PurposeOriginal Equipment
Applicant FRN0023775950
ModelCBT780
Frequency Range2402-2480 MHz
Equipment ClassDSS - Part 15 Spread Spectrum Transmitter
Device DescriptionTrue wireless Bluetooth Earphones
Responsible PartyPeetu Melwani, peetumelwani@gmail.com , +852-23684777
Non-Technical ContactPEETU PEETU, SENTRY INDUSTRIES INC., Pmelwani@sentryindustries.com , +8457532910
Test FirmMatte He, Shenzhen Tongzhou Testing Co., Ltd., Matte.He@sztz-testing.com , 18002561799
TCB EmailTCBadmin@compliancetesting.com
TCB ScopeA4: UNII devices & low power transmitters using spread spectrum techniques
Short-Term ConfidentialityNo
Long-Term ConfidentialityYes
Modular EquipmentDoes not apply
Composite DeviceNo
Cognitive RadioNo
Authorization WaiverNo
Authorization Waiver ApprovedNo
Section 5301 CertificationYes
Related OET Knowledge DataBase InquiryNo

Applications

Application IDDatePurpose
jz+dgXmBDc7jz7wW1KHZ2w==2026-07-14Original Equipment

Equipment Authorization

FrequencyOutputRules
2402-2480 MHz0.00152115C

Grants

TCB Grant - Application jz+dgXmBDc7jz7wW1KHZ2w==

TCB GRANT OF EQUIPMENT
AUTHORIZATION		 TCB
Certification
Issued Under the Authority of the
Federal Communications Commission
By:

  Compliance Testing, LLC
1724 S. Nevada Way
Mesa, AZ 85204
Date of Grant: 07/14/2026

Application Dated: 07/14/2026
Sentry Industries limited
Room A9, 7/F K11 Atelier, Victoria Dockside,
18 Salisbury Road, Tsim Sha Tsui
HONG KONG,
China
 
Attention: Peetu Melwani , 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:  2ACP4CBT780
Name of Grantee:  Sentry Industries limited
Equipment Class: Part 15 Spread Spectrum Transmitter
Notes: True wireless Bluetooth Earphones
Grant Notes  FCC Rule Parts Frequency
Range (MHZ) 		Output
Watts 		Frequency
Tolerance 		Emission
Designator
15C 2402.0  -  2480.0 0.001521  

Output power listed is conducted.