Check the listing for details. NEW SPP-C Bluetooth Serial Adapter Module Replace For HC-05 HC-06 Slave AT-05. Condition: New. Listed at 1.57 USD. Product ViewProduct DescriptionDescriptions: Operating Frequency Band 2.4GHz -2.48GHz unlicensed ISM bandBluetooth Specification V2.1+EDROutput Power Class:Class 2Operating Voltage 3.3VHost Interface UARTDimension 27mm (L) x 13 (W) mm x 2mm (H)Storage temperature -40℃ +150℃Supply voltage: VBAT -0.4V 5.6VOther terminal voltages VSS-0.4V VDD+0.4VRecommended Operating ConditionsOperating temperature range -40℃ +150℃Guaranteed RF performance range(a) -40℃ +150℃Supply voltage: VBAT 2.2V 4.2V(b) Package included： 1 x SPP-C Bluetooth Serial Adapter Module Replace For HC-06/HC-05 Slave AT-05 FeedBackGuaranteeReturn\RefundFeedBack We maintain high standards of excellence and strive for 100% customer satisfaction! Feedback is very important. We request that you contact us immediately BEFORE you give us neutral or negative feedback, so that we can perform up your satisfaction. It is impossible to address issues if we do not know about them!Guarantee 1. 12 months Manufacturer’s limited Warranty for defective items (excluding items damaged and/or misused after receipt). Accessories come with a 3-month warranty. 2. Defective items MUST BE reported and returned within the warranty period (and in the original packaging, if possible). You must tell us what the defect is and give us your order number. WE DO NOT REPAIR OR REPLACE ITEMS WITH AN EXPIRED WARRANTY. Return\Refund 1. You have 7 days to contact us and 30 days to return it from the date received. If the item is in your possession more than 7 days, it will be considered used and WE WILL NOT ISSUEA REFUND OR REPLACEMENT to you. There are NO EXCEPTIONS! Shipping cost is bear by both seller and buyer in half. 2. All returned items MUST BE in the original packaging and you MUST PROVIDE us with the shipping tracking number, specific reason for the return, and your order ID. 3. We will refund YOUR FULL WINNING BID AMOUNT, upon receipt of the item in its original condition and packaging with all components and accessories included, AFTER BOTH Buyer and Seller cancel the transaction from aliexpress. OR, you may choose to have a replacement. 4. We will bear all the shipping cost if the product(s) is (are) not as advertised.