CMi4140 - Integrated MCM for Kamstrup Multical 403/603/803, LoRaWAN

The rapid growth of IoT (“Internet of things”) has resulted in new communication techniques, specifically developed to meet the growing demand of high energy-efficiency and long range. LoRaWAN is one such technique. CMi4140 is mounted inside a Kamstrup MULTICAL 403/603/803 to deliver meter data to a receiving server via a LoRaWAN network. The product has 11 years of battery life, is energy-efficient, has a long communication range and is easily retrofitted inside an already deployed meter. CMi4140 is easily configured through Elvaco OTC mobile app (via NFC). With CMi4140, Elvaco offers a meter communication module designed for customers that require a user-friendly and cost-effective solution. The CMi4140 is available both as a version with internal and as a version with external antenna. The configuration via NFC (Near Field Communication) with a smartphone makes the meter module particularly easy to operate. After you have activated the module with the mobile Elvaco OTC app via NFC or by pressing the buttons on the meter for a time until "Call" appears, the module can log on to a network using the over-the-air activation (OTAA) procedure. First, a network key is generated which is derived from the OTAA key during pairing. You can then configure the NFC device via the associated Elvaco OTC app or adjust the settings remotely via the LoRaWAN downlink. The CMi4140 can process seven different message types and has an individually adjustable sending interval that determines the frequency of communication of the meter module with the server. To ensure maximum battery life of at least eleven years, the CMi4140 has an EcoMode. This regulates the transmission interval to a fixed limit value in order to enable energy-efficient operation. Last but not least, the CMi4140 has a configuration lock that prevents unauthorized access to the module. If this locking function has been activated, access requires a device-specific product access key, which can be automatically picked up with the customer user using the Elvaco OTC app from the key management platform Evo.