[Product weight]：10.3±0.1g
[Transmission power]：37dBm
[Communication distance]： 25km
[Product size]： 50*30.9mm
[Introduction]：E22-400T37S is a wireless serial port module (UART) based on SEMTECH's LoRa solution. It has multiple transmission methods, works in the (410.125~493.125MHz) frequency band (default 433.125MHz), LoRa spread spectrum technology, TTL level output, supports 4 5 V - 15V supply voltage.
| Main parameter | performance | Remark | |||||
| minimUm | Typical value |
maximu m |
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| Operating voltage (V). | 4.5 | 5~12 V | 15 |
≥4. 5V guarantees output power, and the lower the voltage, the greater the supply current |
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| Communication level (V) | - | 3.3 | - |
Using 5V levels may pose a risk of burnout, requiring |
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| Operating temperature (°C). | -40 | - | 85 |
Industrial-grade design |
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| Operating frequency band (MHz). |
410.125 | - | 493.125 |
ISM bands are supported |
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| power consumpion |
5V transmit current (mA) | 2900 | 3100 | 3300 |
Test at 50 ohms impedance, impedance mismatch may cause large current, use 5V power supply,please provide at least 3.5A output power supply |
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| 12V transmit current (mA) | 900 | 1100 | 1300 |
Test at 50 ohms impedance, impedance mismatch may cause large current, use 12V power supply, please provide at least 1.5A output power supply |
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| Receive current (mA). | 11 | 43 | 15 |
- |
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| Sleep current (uA). | - | 2 | - |
Software shutdown |
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| Maximum transmit power(dBm). | 36 | 37 | 38 |
- |
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| Receive sensitivity (dBm). | -126 | -128 | -130 |
Air rate 2.4 kbps |
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| Air rate (bps). | 0.3k | 2.4k | 62.5k |
User programmatic control |
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| Reference distance | 20km |
Clear sky, Chengdu downtown, antenna gain 5dBi, |
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| Emission length | 240 Byte |
Subpackets can be sent by command setting |
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| Cache capacity | 1000 Byte |
- |
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| Modulation mode | LoRa |
A new generation of LoRa modulation technolog |
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| Communication interface | UART serial port |
TTL leve |
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| Encapsulation method | SMD |
SMD |
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| Interface mode | 2.54mm |
- |
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| Form factor | 50*30.9mm |
- |
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| RF interfac | IPEX/stamp hole |
The characteristic impedance is about 50 ohms |
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