Technical Specifications
Hardware Parameters
| Parameter | Value | Remark |
| Chip | TI CC1310 | Dual-core ARM (Cortex-M3 + Cortex-M0) |
| Flash | 128KB | — |
| RAM | 8KB | — |
| Buffer | 2048 Byte | User-configurable |
| Communication Interface | UART | TTL 3.3V level |
| Modulation | GFSK | — |
| Antenna Interface | Stamp Holes | 50Ω characteristic impedance |
| Packaging | SMD | 10 × 10mm |
RF Parameters
| Parameter | Unit | Value | Remark |
| Transmit Power | dBm | 14 | — |
| Receive Sensitivity | dBm | -108 | @ 2.5kbps air speed |
| Reference Distance | m | 1500 | Open field, 2.15dBi antenna |
| Frequency Band | MHz | 425–450.5 | Also: 861–876.5 / 907–922.5MHz variants |
| Air Speed | bps | 2.5k–168k | User-programmable |
| Blocking Power | dBm | 10 | Reduces burnout risk at close range |
Electrical Parameters
| Parameter | Unit | Value | Remark |
| Operating Voltage | V | 2.2–3.8 | >3.8V will permanently damage module |
| IO Level | V | 3.3 | Do NOT connect 5V TTL directly |
| TX Current | mA | 31 | Peak during transmission |
| RX Current | mA | 9 | — |
| Sleep Current | μA | 1.7 | Software shutdown mode |
| Operating Temp | ℃ | -20 – +85 | Industrial grade |
| Storage Temp | ℃ | -40 – +125 | — |
Product Details
TI CC1310 Dual-Core Architecture — MCU + Dedicated RF Core
The CC1310 integrates a Cortex-M3 application processor and a dedicated Cortex-M0 RF core, offloading all RF protocol processing from the main MCU. This architecture enables simultaneous sensor data processing and wireless communication without performance compromise, while keeping sleep current as low as 1.7μA — ideal for battery-powered nodes.
8 Configurable Working Modes incl. Air Wake-Up (WoR)
The E70-433MT14S supports 8 operating modes configurable via M0/M1 pins and AT commands, including transparent transmission, fixed-point addressing, broadcast, and air wake-up (WoR). WoR mode enables the receiver to wake from sleep only when a valid RF packet is detected, dramatically extending battery life in listen-heavy applications.
Flexible Networking — P2P, Broadcast, Multi-Point
Supports point-to-point, point-to-multipoint, and mesh-style networking via address and channel configuration. Up to 65536 addresses and 32 channels allow large-scale deployments without interference. RSSI signal strength reporting enables link quality monitoring at the application layer.
24MHz TCXO — Industrial Frequency Stability
Equipped with a 24MHz temperature-compensated crystal oscillator (TCXO), the E70-433MT14S maintains frequency accuracy across -20 to +85℃. This ensures reliable communication in thermally variable industrial environments where standard crystal oscillators would drift and cause packet loss.
10×10mm Ultra-Compact SMD — Stamp-Hole Integration
At 10×10mm and 0.5g, the E70-433MT14S is one of the smallest 433MHz UART modules available. Stamp-hole (castellated) pads allow direct SMD reflow soldering onto host PCBs without connectors, minimizing BOM cost and assembly complexity for high-volume IoT product integration.
Field Distance Test
Ideal Applications
FAQ
Q: What is the difference between E70-433MT14S and E70-433T14S2?
A: The E70-433MT14S uses stamp-hole (castellated) SMD pads for direct PCB soldering at 10×10mm. The E70-433T14S2 is a larger variant with an SMA antenna connector. Choose MT14S for compact PCB integration; T14S2 for prototyping or external antenna applications.
Q: Is the E70-433MT14S compatible with 5V UART systems?
A: No. The module operates at 3.3V TTL logic. Connecting 5V TTL directly to the UART pins will damage the module. Use a 3.3V–5V level shifter when interfacing with 5V microcontrollers such as Arduino Uno or STM32 5V-tolerant boards.
Q: Can the E70-433MT14S be used in LoRaWAN networks?
A: No. The E70-433MT14S uses TI CC1310 with GFSK modulation — it is not a LoRa (Semtech SX12xx) module and does not support LoRaWAN protocol. It operates as a transparent UART serial link or with Ebyte’s proprietary addressing protocol. For LoRaWAN, consider Ebyte E22 or E77 series.
Q: What is the maximum air speed and how does it affect range?
A: The air speed is user-programmable from 2.5kbps to 168kbps. Lower air speeds (e.g., 2.5kbps) yield maximum sensitivity (-108dBm) and longest range (1.5km). Higher air speeds reduce sensitivity but increase throughput — suitable for short-range, high-data-rate applications.
Q: Does the module support RSSI reporting?
A: Yes. The E70-433MT14S can append RSSI byte data to received packets, allowing the host MCU to monitor link quality and implement adaptive power or routing decisions at the application layer.
