E80-400M2213S is a dual-band SMD LoRa hardware SPI wireless module independently developed based on SEMTECH's LoRa Connect™ LR1121 chip for multi-band global connectivity, with transmit powers of 22dBm and 13dBm respectively. An industrial-grade 48MHz high-precision low-temperature drift crystal oscillator is integrated inside the module. LR1121 is SEMTECH's third-generation ultra-low power LoRa transceiver. It provides multi-band LoRa and long-range frequency hopping spread spectrum (LR-FHSS) communications based on Sub-GHz and 2.4 GHz ISM bands, as well as satellite s-band connectivity. At the same time, it remains configurable to meet different application requirements and proprietary protocols.
[Working frequency]：410-493M/2.4GHz
[Transmitting power]： 21.5/13dBm
[Communication distance]： 5.6/2.6km
[Product size]：26*16mm
| RF parameters | Parameter value | Remark |
| Working frequency band (MHz) | 410-493 | @Sub-GHz, users can program the module to work at different frequencies |
| 2400-2500 | @2.4GHz, users can program the module to work at different frequencies | |
| Blocking power (dBm) | 10 | Less likely to be burned if used at close range |
| Maximum transmit power (dBm) | 21.5 | @Sub-GHz, user can adjust the output power through programming |
| 13 | @2.4GHz, user can adjust the output power through programming | |
| Receiving sensitivity (dBm) | -136 | @Sub-GHz，BWL=125kHz, SF=9 |
| -129 | @2.4GHz，BWL=406kHz, SF=7 | |
| Reference communication distance (km) | ≤5.6 | @Sub-GHz, clear and open environment, antenna gain 3.5dBi, antenna height 2.5 meters, air rate 2.4kbps |
| ≤2.6 | @2.4GHz, clear and open environment, antenna gain 5dBi, antenna height 2.5 meters, air rate 2.4kbps |
| Electrical parameters | minimum value | Typical value | maximum value | Remark |
| Working voltage (V) | 1.8 | 3.3 | 3.7 | ≥3.3V can guarantee the output power. If it exceeds 3.8V, there is a risk of burning. |
| Communication level (V) | - | 3.3 | - | There is a risk of burning when using 5V TTL. Users should use the conversion circuit rationally. |
| Emission current (mA) | - | 120 | - | @433/470MHz, instantaneous power consumption |
| - | 125 | - | @868/915MHz, instantaneous power consumption | |
| - | 35 | - | @2.4GHz, instantaneous power consumption | |
| Receive current (mA) | - | 9.5 | - | @Sub-GHz |
| - | 9 | - | @2.4GHz | |
| Sleep current (μA) | - | 10 | - | Software shutdown, all radio frequencies do not work |
| Working temperature (℃) | -40 | - | 85 | Industrial grade design |
| Working humidity (%rh) | 10 | - | 90 | - |
| Storage temperature (℃) | -50 | - | 150 | - |
| Hardware parameters | Parameter value | Remark |
| IC full name | LR1121IMLTRT | SEMTECH official website lead-free product number |
| Crystal frequency (MHz) | 32 | The module has built-in active temperature compensated crystal oscillator |
| Module size (mm) | 26.0*16.0*3.0 | length*width*height |
| Antenna form | IPEX-1/stamp hole | IPEX 1st generation socket, Sub-GHz/2.4GHz dual antenna interface design |
| Communication interface | SPI | Communication level 1.8-3.7V, it is recommended to use 3.3V to ensure data reliability |
| Packaging method | Patch/stamp hole | The pin spacing is 1.27mm. Please see Chapter 3 for detailed size information. |
| Weight(g) | 1.85 | - |
