[Solution puce]:Solution LoRa
[Fréquence de fonctionnement]:410~510 MHz
[Puissance d'émission]:22 dBm
[Distance de communication]:5 km
[Dimensions]:14 x 17,5 mm
[Poids]:1,2 ± 0,1 g
[Introduction]:L'EWM226-400T22S est un module de transmission de données sans fil LoRa pour tondeuse à gazon, intégré à un émetteur-récepteur. Fonctionnant dans la bande de fréquences 410-510 MHz, il prend en charge plusieurs niveaux de puissance, la commutation libre des débits radio, une large gamme de débits en bauds sur le port série et une utilisation simple. Ce module LoRa est adapté aux applications de transmission haut débit telles que la sécurité intelligente, la lecture avancée de compteurs et les tondeuses à gazon.
| RF parameters | unit | Performance parameters | Remark |
| Maximum transmit power | dBm | 22.0±1 | - |
| Receiving sensitivity | dBm | -130 | The air rate is 2.4kbps |
| Reference distance | M | 5K | In a clear and open environment, the antenna gain is 5dBi, the antenna height is 2.5 meters, and the air rate is 2.4kbps. |
| Working frequency band | MHz | 410.125~493.125MHz | Support ISM band |
| Air speed | bps | 2.4K~62.5K | User programmable control |
| Blocking power | dBm | 10 | The probability of burning is lower when used at close range |
| Launch length | Btye | 240 | The command can be set to send packets of 32/64/128/240 bytes |
| Electrical parameters | unit | parameter | Remark | |
| Operating voltage | In | 2.7~5.5 | ≥5V can guarantee the output power , and exceeding 5.5V will permanently burn the module. | |
| Communication level | In | 3.3V | Using 5V TTL may burn out | |
| Power consumption | Emission current | m.a. | 110 | Instantaneous power consumption @22dBm |
| Receiving current | m.a. | 8 | ||
| Sleep current | a | 3 | Software shutdown | |
| Operating temperature | ℃ | -40~+85 | Industrial-grade design | |
| Hardware Parameters | parameter | Remark |
| Crystal frequency | 32MHz | Industrial grade high precision crystal oscillator |
| Modulation | LoRa | LoRa modulation technology |
| Interface | 1.27mm stamp hole | |
| Communication interface | UART Serial Port | TTL level |
| Launch length | 240 Btye | The command can be set to send packets of 32/64/128/240 bytes |
| Packaging | SMD | - |
| Cache capacity | 1000Btye | - |
| Antenna interface | IPEX/Stamp Hole | Equivalent impedance is about 50Ω |
| size | 14 * 20 mm | ±0.1mm |
| Product Net Weight | 1.95g | ±0.05g |