E220-400M33S is based on the new generation of LoRaTM RF chip LLCC68 produced by Semtech. It is independently developed with a maximum power of 2W and is suitable for 433/470MHz SMD LoRaTM wireless modules. It uses an industrial-grade high-precision 32MHz crystal oscillator. Since the imported LLCC68 is used as the core of the module, a power amplifier (PA) and a low-noise amplifier (LNA) are built in on the original basis, so that the maximum transmission power reaches 2W and the receiving sensitivity is further improved. The overall communication stability is greatly improved compared to products without power amplifiers and low-noise amplifiers.
[Operating frequency]：410~493MHz
[Transmitting power]：33dBm
[Communication distance]：16km
[Product size]：38.5*24mm
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| Main parameters | performance | Remark | |
| minimum value | maximum value | ||
| Supply voltage (V) | 0 | 5.5 | Exceeding 5.5V will permanently burn the module |
| Blocking power (dBm) | - | 10 | Less likely to be burned if used at close range |
| Working temperature (℃) | -40 | 85 | Industrial grade |
| Main parameters | performance | Remark | |||
| minimum value | Typical value | maximum value | |||
| Working voltage (V) | 3 | 5 | 5.5 | ≥5V guaranteed output power | |
| Communication level (V) | - | 3.3 | - | Using 5V TTL risks burning out | |
| Working temperature (℃) | -40 | - | 85 | Industrial grade design | |
| Working frequency band (MHz) | 410 | 433/470 | 493 | Support ISM frequency band | |
| Power consumption | Emission current (mA) | - | 1200 | - | Instantaneous power consumption |
| Receive current (mA) | - | 12.5 | - | ||
| Sleep current (μA) | - | 1 | - | Software shutdown | |
| Maximum transmit power (dBm) | 32.5 | 33 | 33.5 | ||
| Receiving sensitivity (dBm) | - | -129 | - | -124dbm,BW_L=125kHz,SF = 7,LORA TM ; -129dbm,BW_L=125kHz,SF = 9,LORA TM ; -121dbm,BW_L=250kHz,SF = 7,LORA TM ; -129dbm,BW_L=250kHz,SF = 10,LORA TM ; -117dbm,BW_L=500kHz,SF = 7,LORA TM ; -127dbm,BW_L=500kHz,SF = 11,LORA TM ; |
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| Communication speed rate | GFSK（bps） | 0.6k | -121dbm,BW_L=250kHz,SF = 7,LORA TM ; | 300k | User programmable customization |
| LoRa（bps） | 1.76k | -121dbm,BW_L=250kHz,SF = 7,LORA TM ; | 62.5k | User programmable customization | |
| Main parameters | describe | Remark |
| Measured distance | 16km | Sunny and open space, antenna gain 3.5dBi, antenna height 2.5 meters, air rate 2.4kbps |
| FIFO | 256Byte | Maximum length of a single send |
| Crystal frequency | 32MHz | Passive crystal oscillator, recommended 24pF |
| Modulation method | LORA | It is recommended to use LORA modulation method |
| Packaging method | SMD type | -121dbm,BW_L=250kHz,SF = 7,LORA TM ; |
| Interface mode | 2.54mm | stamp hole |
| Communication interface | SPI | 0~10Mbps |
| Overall dimensions | 38.5*24mm | -121dbm,BW_L=250kHz,SF = 7,LORA TM ; |
| RF interface | Stamp hole/IPEX | Equivalent impedance is about 50Ω |
| weight | 5.85g | -121dbm,BW_L=250kHz,SF = 7,LORA TM ; |
