Specification Brand : Diitao BulletPoint1 : Advantages:The HC 05 Bluetooth module deserves your attention because of the advantages of small size,high transceiver sensitivity, low power consumption and so on. BulletPoint2 : Easy Operation:The HC-05 module is used for wireless serial connection setup.It is easy to use and you can easily connect this module to your board. BulletPoint3 : Wide Application:The bluetooth module can be used in many occasions. It is suitable for bluetooth wireless data transmission,automobile testing equipment,smart home, industrial control,telemetry and so on. BulletPoint4 : Working Voltage:3.6V to 6V;Default Baud Rate: 9600,Default Pin:1234. BulletPoint5 : Package Included:4pcs bluetooth module. Color : HC-05 CompatibleDevices : Desktop DataLinkProtocol : Bluetooth ExternallyAssignedProductIdentifier1 : 701715524996 ExternallyAssignedProductIdentifier2 : 0701715524996 FrequencyBandClass : tri_band HardwareInterface : bluetooth IncludedComponents : Transceiver Module ItemName : Diitao 4PCS Bluetooth Module BT Modules 6 Pin Wireless RF Transceiver Long Range Bluetooth Transceiver for Arduino (HC-05) ItemPackageDimensions_Height : 7.8 centimeters ItemPackageDimensions_Length : 1.2 centimeters ItemPackageDimensions_Width : 5.4 centimeters ItemTypeKeyword : bluetooth-network-adapters Manufacturer : Diitao NumberOfItems : 4 ProductDescription : Input voltage: 3.6V--6V, prohibit exceeding 7V ProductSiteLaunchDate : 2022-07-04T01:54:37.182Z SpecificUsesForProduct : home SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnspscCode : 43211614 WarrantyDescription : Warranty within 6 months