E70-400M14S1B adopts the original imported CC1312R RF chip of Texas Instruments (TI), the chip integrates a single-chip microcomputer and wireless transceiver, and adopts 48MHz industrial-grade high-precision low-temperature bleaching oscillator to ensure its industrial characteristics and stable performance. The wireless module is a pure hardware SOC module, there is no program from the factory, and the user needs to develop it for secondary use before it can be used.
Chip solution: CC1312R
Working frequency band: 410~490MHz
Transmit power: 14dBm
Communication distance: 1.5km
Product size: 16*26mm
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E70-400M14S1B Mannual
E70 CE Certification
E70 FCC Certification
Company Proflile
| Main parameters | Performance |
Remarks | |
| Minimum value | Maximum value | ||
| Power supply voltage (V) | 0 | 3.8 | Exceeding 3.8V permanently burns out the module |
| Blocking power (dBm) | - | 10 | Less chance of burning when used at close range |
| Working temperature (℃) | -40 | 85 |
industrial grade |
| Main parameters | Description | Remark |
| Reference distance | 1500m | Clear sky, antenna gain 5dBi, antenna height 2.5 meters, air rate 2.5kbps |
| Crystal frequency | 48MHz | - |
| Modulation | GFSK | - |
| Encapsulation | SMD | - |
| Interface | 1.27mm | - |
| IC full name | CC1312R1F3RGZ | - |
| FLASH | 352KB | - |
| ROM | 256KB | - |
| RAM | 8KB+80KB | 8KB of Cache SRAM (Available as General Purpose RAM) 80KB of ultra-low-leakage SRAM. |
| kernel | Arm Cortex-M4F Processor | - |
| Dimensions | 26*16mm | - |
| RF interface | IPEX/stamp hole | Equivalent impedance about 50Ω |
| Weight (g): | 2.5 | - |
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Agricultural Irrigation (RTK GPS Connectivity): Customers have successfully integrated this module into agricultural equipment, specifically using it to provide a reliable wireless connection for RTK GPS units mounted on irrigation machines.
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Small Image Transmission: Although not its primary design purpose, users routinely use the module to transmit small photos. For example, a 320x240 image can be transmitted in about 6 seconds, making it useful for low-bandwidth remote monitoring.
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Custom IoT Projects with WOR: Developers utilize the module for custom engineering projects that require Wake-on-Radio (WOR) and structured messaging, often pairing it with community-developed libraries for secondary development.
FAQs
Q1: Are the data inputs of the module 5V tolerant?
A: No. The maximum power supply voltage for this module is 3.8V. Exceeding 3.8V will permanently burn out the module. You will need level shifters if you are interfacing it with a 5V system.
Q2: Does this module have pre-loaded firmware out of the box?
A: No, the E70-400M14S1B is a pure hardware SOC module. There is no factory program installed, meaning the user must perform secondary development (programming the CC1312R chip) before it can be used.
Q3: Can I use this module to send photos or images?
A: Yes, but with limitations. While not originally intended for media transmission, customers have reported successfully sending small images (like 320x240 pixels) in about 6 seconds. However, it is advised to keep the baud rate at or below 57.6 KBaud; setting it higher may result in corrupted images.
Q4: What is the maximum communication distance I can expect?
A: The reference distance is up to 1.5km. To achieve this, you need ideal conditions: a clear sky/line of sight, an antenna gain of 5dBi, an antenna height of 2.5 meters, and an air data rate of 2.5kbps.
