| Photo | Mfr. Part # | Availability | Quantity | Datasheet | Series | Package/Case | Packaging | Product Status | Programmable | RF Family/Standard | Protocol | Modulation | Frequency | Data Rate | Power - Output | Sensitivity | Serial Interfaces | Antenna Type | Utilized IC / Part | Memory Size | Voltage - Supply | Current - Receiving | Current - Transmitting | Mounting Type | Operating Temperature | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|   | WT12-A-AI55IAPCRF TXRX MOD BLUETOOTH CHIP SMD Silicon Labs | 2,449 |  | - | WT12 | 31-SMD Module | Bulk | Obsolete | Not Verified | Bluetooth | Bluetooth v2.1 + EDR, Class 2 | DQPSK, GFSK | 2.4GHz | 3Mbps | 3dBm | -86dBm | PIO, SPI, UART, USB | Integrated, Chip | BlueCore4 | 1MB Flash | 2.7V ~ 3.6V | 70mA | 70mA | Surface Mount | -40°C ~ 85°C | 
|   | WT41U-E-AI4CRF TXRX MOD BLUETOOTHU.FL SMD Silicon Labs | 2,409 |  | - | WT41U | 59-SMD Module | Bulk | Obsolete | Not Verified | Bluetooth | Bluetooth v2.1 +EDR, Class 1 | - | - | 3Mbps | 18dBm | -96.5dBm | AIO, GPIO, SPI, UART, USB | Antenna Not Included, U.FL | - | - | 3V ~ 3.6V | 44mA | 85mA ~ 136mA | Surface Mount | -40°C ~ 85°C | 
|   | WT12-A-AI5001IAPCRF TXRX MOD BLUETOOTH CHIP SMD Silicon Labs | 3,697 |  | - | WT12 | 31-SMD Module | Bulk | Obsolete | Not Verified | Bluetooth | Bluetooth v2.1 + EDR, Class 2 | DQPSK, GFSK | 2.4GHz | 3Mbps | 3dBm | -86dBm | PIO, SPI, UART, USB | Integrated, Chip | BlueCore4 | 1MB Flash | 2.7V ~ 3.6V | 70mA | 70mA | Surface Mount | -40°C ~ 85°C | 
|   | WT11U-A-AI55IAPCRF TXRX MOD BLUETOOTH CHIP SMD Silicon Labs | 2,260 |  | - | WT11U | 28-SMD Module | Bulk | Obsolete | Not Verified | Bluetooth | Bluetooth v2.1 +EDR, Class 1 | - | - | 3Mbps | 17dBm | -88dBm | SPI, UART, USB | Integrated, Chip | - | - | 2.7V ~ 3.6V | 36mA | 88mA ~ 138mA | Surface Mount | -40°C ~ 85°C | 
|   | WT12-A-AI5002IAPCRF TXRX MOD BLUETOOTH CHIP SMD Silicon Labs | 3,210 |  | - | WT12 | 31-SMD Module | Bulk | Obsolete | Not Verified | Bluetooth | Bluetooth v2.1 + EDR, Class 2 | DQPSK, GFSK | 2.4GHz | 3Mbps | 3dBm | -86dBm | PIO, SPI, UART, USB | Integrated, Chip | BlueCore4 | 1MB Flash | 2.7V ~ 3.6V | 70mA | 70mA | Surface Mount | -40°C ~ 85°C | 
|   | WT12-A-AI5IAP-CRF TXRX MOD BLUETOOTH CHIP SMD Silicon Labs | 4,268 |  | - | WT12 | 31-SMD Module | Bulk | Obsolete | Not Verified | Bluetooth | Bluetooth v2.1 + EDR, Class 2 | DQPSK, GFSK | 2.4GHz | 3Mbps | 3dBm | -86dBm | PIO, SPI, UART, USB | Integrated, Chip | BlueCore4 | 1MB Flash | 2.7V ~ 3.6V | 70mA | 70mA | Surface Mount | -40°C ~ 85°C | 
|   | WT11U-A-AI5CRF TXRX MOD BLUETOOTH CHIP SMD Silicon Labs | 2,712 |  | - | WT11U | 28-SMD Module | Bulk | Obsolete | Not Verified | Bluetooth | Bluetooth v2.1 +EDR, Class 1 | - | - | 3Mbps | 17dBm | -88dBm | SPI, UART, USB | Integrated, Chip | - | - | 2.7V ~ 3.6V | 36mA | 88mA ~ 138mA | Surface Mount | -40°C ~ 85°C | 
|   | WT41U-A-AI5CRF TXRX MOD BLUETOOTH CHIP SMD Silicon Labs | 3,754 |  | - | WT41U | 59-SMD Module | Bulk | Obsolete | Not Verified | Bluetooth | Bluetooth v2.1 +EDR, Class 1 | - | - | 3Mbps | 18dBm | -96.5dBm | AIO, GPIO, SPI, UART, USB | Integrated, Chip | - | - | 3V ~ 3.6V | 44mA | 85mA ~ 136mA | Surface Mount | -40°C ~ 85°C | 
|   | WT12-A-AI5001CRF TXRX MOD BLUETOOTH CHIP SMD Silicon Labs | 1,638 |  | - | WT12 | 31-SMD Module | Bulk | Obsolete | Not Verified | Bluetooth | Bluetooth v2.1 + EDR, Class 2 | DQPSK, GFSK | 2.4GHz | 3Mbps | 3dBm | -86dBm | PIO, SPI, UART, USB | Integrated, Chip | BlueCore4 | 1MB Flash | 2.7V ~ 3.6V | 70mA | 70mA | Surface Mount | -40°C ~ 85°C | 
|   | WT12-A-HCICRF TXRX MOD BLUETOOTH CHIP SMD Silicon Labs | 3,927 |  | - | WT12 | 31-SMD Module | Bulk | Obsolete | Not Verified | Bluetooth | Bluetooth v2.1 + EDR, Class 2 | DQPSK, GFSK | 2.4GHz | 3Mbps | 3dBm | -86dBm | PIO, SPI, UART, USB | Integrated, Chip | BlueCore4 | 1MB Flash | 2.7V ~ 3.6V | 70mA | 70mA | Surface Mount | -40°C ~ 85°C |