A remote monitoring device is provided for monitoring the status of an electronic display unit. The remote monitoring device includes a current detector connected to an input power cord that provides power to said electronic display unit, the current detector outputting a current detection signal based on the current of the input power cord. The remote monitoring device further includes a cellular communication module that communicates via a cellular communication network to an internet-connected server, and a Wi-Fi communication module that communicates with one or more local Wi-Fi access points and obtains access point identification information related to the one or more local Wi-Fi access points. The remote monitoring device also includes a memory module that stores data and instructions, and a processor unit in communication with the current detector, the cellular communication module, the Wi-Fi communication module and the memory module, the processor unit executing the instructions to (1) periodically record an electric current value associated with the current detection signal, (2) generate a message containing the recorded electric current values and the access point identification information, (3) provide the message to the cellular communication module, and (4) instruct the cellular communication module to send the message via the cellular communication network to the internet-connected server.