[elecena] EM500-SWL-868M-L020-4780W LoRaWAN water level sensor, 0 - 20 m

[elecena] EM500-SWL-868M-L020-4780W LoRaWAN water level sensor, 0 - 20 m - zmiany ceny EM500-SWL-868M PN:L020-4780W LoRaWAN water level sensor (0 ~ 20 m)