[Chip solution]：CC1310
[Carrier frequency]：425~450.5MHz
[Transmission power]：14dBm
[Communication distance]：1.5km
[Air speed]：2.5k～168k
[Product size]：10*10mm
[Introduction]：E70-433MT14S is a wireless serial port module (UART) based on TI's CC1310 (built-in dual-core ARM) radio frequency chip, which can work in the 431-446.5 MHz frequency band (default 433MHz), GFSK modulation method, TTL level output,3.3V IO port voltage; this product adopts 24MHz industrial-grade crystal oscillator to ensure its industriality and stability
| Pin Serial Number | Pin Name | Pin Direction | Pin Usage |
| 1 | VCC | Power supply | Module power supply positive reference, voltage range: 2.2 to 3.8V DC |
| 2 | GND | Reference Ground | Ground wire, connected to power reference ground |
| 3 | RESET | Input | Module reset pin, active low |
| 4 | TCK | Input/output | Program download port, JTAG TCKC |
| 5 | TMS | Input/output | Program download port, JTAG TCKC |
| 6 | ANT | Input/output | Antenna connector, stamp hole (50Ω characteristic impedance |
| 7 | GND | Reference Ground | Ground wire, connected to power reference ground |
| 8 | NC | Reserved Foot | Reserved for unused, need to overhang |
| 9 | NC | Reserved Foot | Reserved for unused, need to overhang |
| 10 | NC | Reserved Foot | Reserved for unused, need to overhang |
| 11 | AUX | output | Used to indicate the working status of the module, the user wakes up the external MCU, output low during power-on self-test initialization, can be configured as open-drain output, or push-pull output, see parameter settings for details (can be overhung |
| 12 | TXD | output | Can also be used as a TTL serial output, connected to an external RXD input pin. Can be configured as an open-drain or push-pull output, see parameter settings for details |
| 13 | RXD | Input | TTL serial input, connected to the external TXD output pin. |
| 14 | LNA_EN | output | External LNA control output, active high (can be overhung) |
| 15 | PA_EN | output | External PA control output, active high (can be overhung |
| 16 | GND | Reference Ground | Ground wire, connected to power reference ground |
| 17 | NC | Reserved Foot | Reserved for unused, need to overhang |
| 18 | M2 | Input | M2M1M0 combined to determine the module's eight operating modes, the use of an external series of 1K protection resistor |
| 19 | M1 | Input | M2M1M0 combined to determine the module's eight operating modes, the use of an external series of 1K protection resistor |
| 20 | M0 | Input | M2M1M0 combined to determine the module's eight operating modes, the use of an external series of 1K protection resistor |