This is a Bluetooth 4.0, Module, 3.6V to 5.5V Supply, -91dBm Sensitivity product from SILICON LABS with the model number BLED112-V1 Product details Bluetooth Version Bluetooth 4.0 Supply Voltage Min 3.6V Supply Voltage Max 5.5V Signal Range Max - Data Rate - Bluetooth Class - Receive Sensitivity -91dBm Operating Temperature Min -40 C Operating Temperature Max 85 C Product Range - RoHS Phthalates Compliant To Be Advised Other details Brand SILICON LABS Part Number BLED112-V1 Quantity Each Technical Data Sheet EN All product and company names are trademarks or registered trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them. Image is for illustrative purposes only. Please refer to product description.