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  3. 2ACP4CBT780

FCC ID 2ACP4CBT780

2ACP4-CBT780, 2ACP4CBT780, 2ACP4CBT78O, ZACP4CBT780, ZACP4CBT78O

True wireless Bluetooth Earphones CBT780 Sentry Industries limited

An FCC ID is a unique identifier assigned by the Federal Communications Commission (FCC) to identify wireless radio frequency devices available on the market. The FCC assigns a 3- or 5-character Grantee Code to indicate the company responsible for manufacturing the device. For the current product, the FCC ID is 2ACP4CBT780, where the Grantee Code is 2ACP4. The remaining portion of the ID, CBT780, is typically associated with the product model, though it may also be a randomly chosen string determined by the applicant.

The current product (model CBT780) is manufactured by Sentry Industries limited. It complies with the Federal Communications Commission (FCC) requirements and is classified under the equipment class as DSS - Part 15 Spread Spectrum Transmitter, The equipment notes indicate that the product is a True wireless Bluetooth Earphones.

In addition to the application documents, the FCC also publishes internal and external photographs of the device, user manuals, and test reports. These materials can be viewed under the "Exhibits" tab below.

FCC Registration Number
0023775950
Manufactured By
Sentry Industries limited
Tested By
Shenzhen Tongzhou Testing Co., Ltd.
Equipment Class(es)
  • DSS - Part 15 Spread Spectrum Transmitter
Equipment Note(s)
  • True wireless Bluetooth Earphones
Original Data Source
FCC.gov Official

Applications

  • App #
    Purpose
    Product Type
    Date
    Application ID
  • 1
    Original Equipment
    True wireless Bluetooth Earphones
    07/14/2026
    jz+dgXmBDc7jz7wW1KHZ2w==

    • * total 1 application items

Frequencies

FCC ID 2ACP4CBT780 Frequencies List ALL

  • App #
    Frequency Range
    Power Output
    Tolerance
    Emission Designator
    Rule Parts
    Grant Notes
  • 1.1
    2402.0 - 2480.0
    0.0015210
    15C

    • * total 1 frequency items

FCC ID 2ACP4CBT780 Frequencies List #1

  • App #
    Frequency Range
    Power Output
    Tolerance
    Emission Designator
    Rule Parts
    Grant Notes
  • 1.1
    2402.0 - 2480.0
    0.0015210
    15C

    • * total 1 frequency items

Exhibits

FCC ID 2ACP4CBT780 Exhibits List ALL

FCC ID 2ACP4CBT780 Exhibits List #1

Application Forms

FCC ID 2ACP4CBT780 Application Forms #1

Application for Equipment Authorization FCC Form 731 TCB Version


Applicant Information
Applicant's complete, legal business name: Sentry Industries limited
FCC Registration Number (FRN): 0023775950
Line one: Room A9, 7/F K11 Atelier, Victoria Dockside,
Line two: 18 Salisbury Road, Tsim Sha Tsui
P.O. Box:
City: HONG KONG
State: N/A
Country: China
Zip Code:

TCB Information
TCB Application Email Address: TCBadmin@compliancetesting.com
TCB Scope: A4: UNII devices & low power transmitters using spread spectrum techniques

FCC ID
Grantee Code: 2ACP4 Product Code: CBT780

Person at the applicant's address to receive grant or for contact
First Name: Peetu
Middle Name:
Last Name: Melwani
Title: Manager
Telephone Number: +852-23684777 Extension:
Fax Number: +852-23685777
Email: peetumelwani@gmail.com
Mail Stop:


Technical Contact
Firm Name:
First Name:
Middle Name:
Last Name:
Line 1:
Line 2:
P.O. Box:
City:
State:
Country:
Zip Code:
Telephone Number: Extension:
Fax Number:
E-Mail:

Non Technical Contact
Firm Name: SENTRY INDUSTRIES INC.
First Name: PEETU
Middle Name:
Last Name: PEETU
Line 1: P.O.BOX 885 ONE BRIDGE STREET,
Line 2:
P.O. Box:
City: HILLBURN
State: New York
Country: United States
Zip Code: 10931
Telephone Number: +8457532910 Extension:
Fax Number:
E-Mail: Pmelwani@sentryindustries.com

Long-Term Confidentiality
Does this application include a request for confidentiality for any portion(s) of the data contained in this application pursuant to 47 CFR § 0.459 of the Commission Rules?:   Yes

Short-Term Confidentiality
Does short-term confidentiality apply to this application?:   No
If so, specify the short-term confidentiality release date (MM/DD/YYYY format):  
Note: If no date is supplied, the release date will be set to 45 calendar days past the date of grant.

Software Defined/Cognitive Radio
Is this application for software defined/cognitive radio authorization?   No

Equipment Class
Equipment Class:   DSS - Part 15 Spread Spectrum Transmitter
Description of product as it is marketed: (NOTE: This text will appear below the equipment class on the grant): True wireless Bluetooth Earphones

Related OET KnowledgeDataBase Inquiry
Is there a KDB inquiry associated with this application?  No

Modular Equipment
Modular Type:  Does not apply

Application Purpose
Application is for:   Original Equipment

Composite/Related Equipment
Is the equipment in this application a composite device subject to an additional equipment authorization?   No
Is the equipment in this application part of a system that operates with, or is marketed with, another device that requires an equipment authorization?   No

Equipment Specifications
Line
Entry		 Lower
Frequency		 Upper
Frequency		 Power
Output		 Tolerance Emission
Designator		 Microprocessor
Number		 Rule
Parts		 Grant
Notes
1 2402.00000000 2480.00000000 0.0015210 15C

Test Firm Information
Name of test firm and contact person on file with the FCC:
Firm Name:   Shenzhen Tongzhou Testing Co., Ltd.
First Name:   Matte
Last Name:   He
Telephone Number: 18002561799 Extension:
Fax Number: 
E-mail:  Matte.He@sztz-testing.com

Grant Comments
Enter any text that you would like to appear at the bottom of the Grant of Equipment Authorization:
Output power listed is conducted.

Equipment Authorization Waiver
Is there an equipment authorization waiver associated with this application?  No
If there is an equipment authorization waiver associated with this application, has the associated waiver been approved and all information uploaded?:  No

WILLFUL FALSE STATEMENTS MADE ON THIS FORM ARE PUNISHABLE BY FINE AND IMPRISONMENT (U.S. CODE, TITLE 18, SECTION 1001), AND/OR REVOCATION OF ANY STATION LICENSE OR CONSTRUCTION PERMIT (U.S. CODE, TITLE 47, SECTION 312(a)(1)), AND/OR FORFEITURE (U.S. CODE, TITLE 47, SECTION 503).

SECTION 5301 (ANTI-DRUG ABUSE) CERTIFICATION:
The applicant must certify that neither the applicant nor any party to the application is subject to a denial of Federal benefits, that include FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. § 862 because of a conviction for possession or distribution of a controlled substance. See 47 CFR 1.2002(b) for the definition of a "party" for these purposes.

Does the applicant or authorized agent so certify?  Yes

Applicant/Agent Certification:

I certify that I am authorized to sign this application. All of the statements herein and the exhibits attached hereto, are true and correct to the best of my knowledge and belief. In accepting a Grant of Equipment Authorization as a result of the representations made in this application, the applicant is responsible for (1) labeling the equipment with the exact FCC ID specified in this application, (2) compliance statement labeling pursuant to the applicable rules, and (3) compliance of the equipment with the applicable technical rules. If the applicant is not the actual manufacturer of the equipment, appropriate arrangements have been made with the manufacturer to ensure that production units of this equipment will continue to comply with the FCC's technical requirements.

Authorizing an agent to sign this application, is done solely at the applicant's discretion; however, the applicant remains responsible for all statements in this application.

If an agent has signed this application on behalf of the applicant, a written letter of authorization which includes information to enable the agent to respond to the above section 5301 (Anti-Drug Abuse) Certification statement has been provided by the applicant. It is understood that the letter of authorization must be submitted to the FCC upon request, and that the FCC reserves the right to contact the applicant directly at any time.

Signature of Authorized Person Filing:  Peetu Melwani
Title of authorized signature: 

Complete items below if agent signs the application:

Firm Name: 
First Name: 
Middle Name: 
Last Name: 
Line 1: 
Line 2: 
P.O. Box: 
City: 
State: 
Country: 
Zip Code: 
Telephone Number:  Extension: 
Fax Number: 
E-mail: 

Grants

FCC ID 2ACP4CBT780 EAS Grant #1

COPY FEDERAL COMMUNICATIONS
COMMISSION
WASHINGTON, D.C. 20554

GRANT OF EQUIPMENT
AUTHORIZATION		 COPY
Certification

Sentry Industries limited
Room A9, 7/F K11 Atelier, Victoria Dockside, 18 Salisbury Road, Tsim Sha Tsui
HONG KONG,
China 		  Date of Grant: 07/14/2026

Application Dated: 07/14/2026
 
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
Modular Type: Does not apply
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.



Mail To:


EA555550

FCC ID 2ACP4CBT780 TCB Grant #1

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.