1.DN15-DN40
2.Communication: M-BUS, RS-485, Pulse output, LoRa, LoRaWAN
3.Internal Lithium battery can be replaced easily on-site
4.Waterproof standard: IP 68
5.Frequency: LoRa/ LoRaWAN 865MHz, 902MHz, 868MHz, 915MHz, Customized Frequency Requirement