FCC ID: 2ACP4LBT251 BLUETOOTH EARPHONES

B T 237: Bluetooth Earbuds with Microphone P roduc t P arameters Model Version BT237 5.0 Use Distance Battery Capacity 10 m 60 mAH Product Application Works with all Bluetooth enabled devices. B attery C harging: Before use, make sure battery is fully charged. 1. Find the micro USB slot located on the headphones in-line control 2. Plug Micro USB (small) end into the slot, plug the standard USB (large) end into a charging port or computer. 3. When charging is complete, unplug both ends. The earbuds are ready for use. P airing a nd C onnec tion: * B efore pairing, e nable the B luetooth function of the mobile phone.*

1. When pairing, keep the distance between the mobile phone and the headset within 3.5 feet. 2. Press and hold the P ower button for about 5 seconds, and then release it when the red and blue lights alternately blink. At this time, the headset has entered paring mode. 3. Enable the Bluetooth function of the mobile phone, search the Bluetooth equipment and select B T 237. After connection is successful, the blue light of the headset will blink slowly. F or additional information on pairing the e arphones to a s pecific device pleas e refer to your ins tructions or contact the manufacturer. Notes :

If the mobile phone prompts to enter the pairing password, please enter 0000" and confirm. The pairing mode will be maintained for 5 minutes. If pairing and connection are unsuccessful beyond 2 minutes, the headset will automatically switch to the stand-by mode. After pairing is complete, the headset and the handset will remember each other, without pairing. K ey F unc tions :

On/Off: Pres s and hold the for 5 seconds to turn on/off. Music Pause: Press the button to pause playing, and press the again to resume playback. Volume Increase: Press and hold the button. Volume Reduction: Press and hold the button. Next Song: Press the button. Previous Song: Press the button. Answer/Hang-up: Press the button to answer when the call is incoming, and press it again to hang up. Rejection: Press and hold the button for about 2 seconds, then release it. S pec ific ations :

Driver Unit: 10mm Impedance: 32 ohms Version: Bluetooth 5.0 Sensitivity: 102dB+/-3dB Cord Length: 2ft./0.6M Playtime: Up to 2 hours at 50% volume Frequency: 20Hz-20KHz Battery: Lithium-ion

*Actual playback times may vary. Battery performance may be effected by multiple factors includingbut not limited to ambient temperature, listening volume, and/or distance from source audio device. Warnings a nd P rec autions :

CAUTION: To prevent electric shock, use only compatible USB charging devices WARNING: To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture. CAUTION: Use of controls or adjustments or performance of procedures other than those specified may damage your device WARNING: Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. WARNING: Always store in a cool dry location. WARNING: Headphones are capable of producing sound levels which can be harmful to your hearing. Do not listen at high volume for prolonged periods of time. Headphones may block out surrounding sounds. Never wear headphones while operating a vehicle. Use with caution. User assumes all risks associated with the use of this product. WARNING: Don't over insert into ear canal. Discontinue use at the first sign of discomfort. Only use designed pads. Do not use dirty or damaged ear pads. Contains small parts that may present a choking hazard. Keep away from children. Important S afety I ns truc tions :

1. Read these Instructions. 2. Keep these Instructions. 3. Heed all Warnings. 4. Follow all instructions. 5. Do not use this device near water. 6. Clean only with a dry cloth. 7. Do not block any ventilation openings. Use in accordance with the manufacturer's instructions. 8. Do not charge near any heat sources such as radiators, heat registers, stoves, or other apparatus

(including amplifiers) that produce heat. 9. Discontinue use if damaged 10. Protect the cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the device. 11. Only use attachments/accessories specified by the manufacturer. 12. Unplug this apparatus during lightning storms and when charging is complete 13. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped. 14. Headphones are capable of producing sound levels which can be harmful to your hearing. Do not listen at high volume for prolonged periods of time. Headphones may block out surrounding sounds. Never wear headphones while operating a vehicle. Use with caution. User assumes all risks associated with the use of this product. 90-Day W arranty: Sentry warrants this product to be free from defects in materials and workmanship for 90-days from the date of original purchase. This warranty does not pertain to damage resulting from accident, abnormal use, misuse or neglect. Any defective product will be replaced if returned to an authorized Sentry dealer or to Sentry directly at: P.O. Box 885, One Bridge St. Hillburn, NY 10931. Please enclose a check for $5.00 for shipping & handling. The Bluetooth word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by Sentry Industries Inc is under license. Other trademarks and trade names are those of their respective owners. Sentry Industries inc declares that radio equipment BT237 is in compliance with Directive 2014/53/EU. The EU declaration of confirmity is available at https://sentryindustries.com/european-declaration-of-conformity/

Confirmity with Directives This product is CE marked to denote conformity with Directives 73/23/EEC (low voltage) and 89/336/EEC

(Electromagnetic Compatibility) , as amended. Environmental Protection Waste electrical products should not be disposed of with household waste. Please recycle where facilities exist. Check with your Local Authority or retailer for recycling advice. Supplier's Declaration of Conformity 47 CFR 2.1077 Compliance Information Sentry Bluetooth Responsible Party SENTRY INDUSTRIES INC ONE BRIDGE STREET, HILLBURN, NY 10931 , USA TEL +1 8457532910 FCC Compliance Statement

"This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation."

FCC ID: 2ACP4LBT251 Model #BT237

"NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help Warning: Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment."

B T237: Audfonos Intraurales Bluetooth con Micrfono P armetros d e l os P roduc tos Modelo Versin BT237 5.0 Alcance 10 m Capacidad de Batera 60 mAH Aplicacin del Producto Funciona con todos los dispositivos habilitados para Bluetooth. AVISO: Guardar siempre en una ubicacin fresca y seca. AVISO: Los auriculares tienen la capacidad de producir niveles de sonido que pueden daar su odo. No utilice el volumen alto durante periodos de tiempo prolongados. Los auriculares pueden bloquear los sonidos circundantes. No lleve nunca auriculares mientras conduce un vehculo. Utilcelos con cuidado. El usuario asume todos los riesgos asociados con el uso de este producto. AVISO: No realice una insercin excesiva en su conducto auditivo. Deje de utilizarlos apenas surja la primera seal de incomodidad. Utilice solo almohadillas diseadas. No utilice almohadillas sucias o daadas. Contiene partes pequeas que pueden suponer peligro de asfixia. Mantngalos alejados de los nios C arga d e batera: Antes de utilizar, asegrese de que la batera est completamente cargada. 1.Localice la ranura del USB micro ubicada en el control en lnea de los auriculares Ins truc c iones d e s eguridad importantes :

2.Enchufe el extremo (pequeo) del USB micro en la ranura y enchufe el extremo (grande) del USB estndar 1.Lea estas instrucciones. en un puerto de carga u ordenador. 3.Una vez completada la carga, desenchufe ambos extremos. Los audfonos estn listos para ser utilizados. 2.Conserve estas instrucciones. 3.Tome nota de todos los avisos. 4.Siga todas las instrucciones. 5.No utilice este aparato cerca del agua. 6.Lmpielo slo con un trapo seco. E mparejamiento y c onexin: * Antes del emparejamiento, habilite la funcin B luetooth del telfono mvil.*

1.Al emparejarlos, mantenga entre el telfono mvil y el equipo auricular una distancia de mximo 1 m. 2.Apriete y mantenga apretado el botn de encendido durante unos 5 segundos, y sultelo cuando las luces rojas y azules parpadeen de modo alternado. En ese momento, el equipo auricular ha pasado al modo de emparejamiento. 3.Habilite la funcin Bluetooth de su telfono mvil, busque el equipo Bluetooth y seleccione "B T237." Una vez lograda la conexin, la luz azul de los auriculares parpadear lentamente. P ara informacin adicional en cuanto a e mparejar los a uriculares c on un dispositivo especfico, c onsulte por favor nuestras i nstrucciones o p ngase e n contacto con el fabricante. Notas :

Si el telfono mvil solicita la introduccin de la contrasea de emparejamiento, introduzca "0000" y confirme. El modo de emparejamiento se mantendr durante 5 minutos. Si emparejamiento y conexin no se consiguen tras 2 minutos, los auriculares pasarn automticamente al modo de espera. Una vez completado el emparejamiento, los auriculares y el telfono mvil se recordarn mutuamente sin emparejarse. F unc iones c lave:

Encendido/Apagado: Apriete y mantenga apretado durante 5 segundos para encender/apagar. Pausar la msica: Apriete para pausar la msica, y apriete de nuevo para reanudar la reproduccin. Aumentar el volumen: Apriete y mantega apretado .Disminuir el volumen: Apriete y mantenga apretado . Cancin siguiente: Apriete . Cancin anterior: Apriete . Contestar/Colgar: Apriete para contestar cuando entra una llamada, y vuelva a apretarlo para colgar. Rechazar: Apriete y mantenga apretado durante unos 2 segundos, y sultelo a continuacin. E s pec ific ac iones :

Unidad de diafragma: 10mm Sensibilidad: 102dB+/-3dB Impedancia: 32 ohms Longitud del cable: 0,6M Frecuencia: 20Hz-20KHz Batera:Lithium-ion Avis os y p rec auc iones :

PRECAUCIN: Para impedir un choque elctrico, utilice slo dispositivos de carga USB compatibles. AVISO: Para reducir el riesgo de incendio o choque elctrico, no exponga este aparato a lluvia o humedad. PRECAUCIN: El uso de controles o ajustes, o la ejecucin de procedimientos diferente de lo especificado puede daar su dispositivo. AVISO: Cambios o modificaciones de esta unidad no aprobadas expresamente por la parte responsable de cumplimiento podran anular la autorizacin del usuario para manejar el equipo. 7.No obstruya ninguna apertura de ventilacin. Utilcelas de acuerdo con las instrucciones del fabricante. 8.No lo cargue cerca de fuentes de calor tales como radiadores, calefactores, hornos o otros aparatos

(incluidos los amplificadores) que produzcan calor. 9.Interrumpa el uso si est daado. 10.Proteja el cable de manera que nadie o nada lo pise o lo aplaste, particularmente cerca de las clavijas, tomas de corriente y la parte de la salida del aparato. 11.Utilice solo los adjuntos/accesorios especificados por el fabricante. 12.Desenchufe este aparato durante tormentas elctricas y cuando la carga se haya completado. 13.Toda reparacin debe ser realizada por personal cualificado. Las reparaciones son necesarias cuando el aparato haya sufrido cualquier dao, por ejemplo si est daado el cable de alimentacin o el enchufe, si se ha derramado lquido o si ha habido objetos que han cado dentro del aparato, si el aparato ha sido expuesto a lluvia o humedad, si no funciona con normalidad o si se ha dejado caer. 14.Los auriculares tienen la capacidad de producir niveles de sonido que pueden daar su odo. No utilice el volumen alto durante periodos de tiempo prolongados. Los auriculares pueden bloquear los sonidos circundantes. No lleve nunca auriculares mientras conduce un vehculo. Utilcelos con cuidado. El usuario asume todos los riesgos asociados con el uso de este producto. G aranta d e 90 das : Sentry garantiza que este producto carece de defectos de material y fabricacin durante 90 das desde la fecha de la compra original. Esta garanta no responde de daos provocados por accidente, uso anormal, mal uso o negligencia. Cualquier producto defectuoso ser reemplazado si se devuelve a un comerciante de Sentry autorizado o directamente a Sentry en: P.O. Box 885, One Bridge St. Hillburn, NY 10931. Rogamos adjunte un cheque de $5,00 [USD] por envo y gestin. Este dispositivo se atiene a la parte 15 de las normas de la FCC [Comisin Federal de Comunicaciones]. El funcionamiento est sujeto a las dos condiciones siguientes: (1) Este aparato no puede causar interferencias dainas, y (2) este aparato debe aceptar cualquier interferencia recibida, incluidas las interferencias que puedan causar un funcionamiento indeseado. F C C I D: 2 AC P 4L B T251 M odel #B T237 La marca denominativa y los logotipos de Bluetooth son marcas registradas propiedad de Bluetooth SIG, Inc. y cualquier uso de tales marcas por parte de Sentry Industries Inc est bajo licencia. Otras marcas registradas y los nombres comerciales son los de sus respectivos dueos. Las industrias Sentry Inc. declaran que el equipo de radio BT237 cumple con la Directiva 2014/53/EU. La declaracin de la UE sobre conformidad est disponible en https://sentryindustries.com/european-declaration-of-conformity/

Conformidad con las directivas Este producto est marcado CE para indicar conformidad con las Directivas 73/23/EEC (bajo voltaje) y 89/336/EEC

(compatibilidad electromagntica), segn enmienda. Proteccin ambiental Los productos elctricos desechables no deben desecharse junto con la basura domstica.Por favor, recicle dnde existan las instalaciones para ello. Consulte con su autoridad local o minorista para obtener asesora sobre el reciclaje.

Sentry Industries Limited Agent Authorization Company: Sentry Industries Limited Address: 507 Houston Center, 63 Mody Road, Tst, Hong Kong, China Product Name: Bluetooth Earphone Model Number(s): BT237, BT116, BT120, BT135, BT140, BT150, BT175 , BT231, BT234, BT115, BT239, BT250, BT251, BT315, BT320, BT350, BT450, BT550, BT650, BT651, BT652, BT750, BT751, BT752, BT850, BT875, BT885, BT895, BT876, BT877, BT878, BT879, BT886, BT887, BT888, BT889, BX150, BX250 Product Description: BLUETOOTH EARPHONES We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature:

Date: 2020-07-10 Name:

Peetu Melwani Company: Sentry Industries Limited

Sentry Industries Limited July 10, 2020 Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Subject: Explanation of differences between product types BT231, BT234, BT115, BT239, BT250, BT251, BT315, BT320, BT350, BT450, BT550, BT650, BT651, BT652, BT750, BT751, BT752, BT850, BT875, BT885, BT895, BT876, BT877, BT878, BT879, BT886, BT887, BT888, BT889, BX150, BX250 To Whom It May Concern:

FCC ID : 2ACP4LBT251 Model Number: BT237, BT116, BT120, BT135, BT140, BT150, BT175 , We, The Sentry Industries Limited hereby declare that the model : BT116, BT120, BT135, BT140, BT150, BT175 , BT231, BT234, BT115, BT239, BT250, BT251, BT315, BT320, BT350, BT450, BT550, BT650, BT651, BT652, BT750, BT751, BT752, BT850, BT875, BT885, BT895, BT876, BT877, BT878, BT879, BT886, BT887, BT888, BT889, BX150, BX250 is identical with the model : BT237 except the model name. Except for the different above, no other modification is performed. Sincerely, Signature:

Sentry Industries Limited Contact person: Peetu Melwani

Sentry Industries Limited Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2020-07-10 Subject; Request for Confidentiality FCC ID: 2ACP4LBT251 To Whom It May Concern, Pursuant to the provisions of the Commissions rules Title 47 Sections 0.457 and 0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description Tune-up Procedure External Photos Test Setup Photos Internal Photos User Manual In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR 2.803 and the importation rules in Title 47 CFR 2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s);

OR For 45 days, pursuant to Public Notice DA 04-1705. For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely Sentry Industries Limited Contact person: Peetu Melwani