Wireless pairing of hot water supply system

A hot water supply system, comprising:

• a plurality of hot water supply devices, each of the plurality of hot water supply devices comprising a hot water supply wireless communication module, comprising a transceiver and a receiver, adapted to wirelessly communicate with a mobile terminal;
• wherein one hot water supply device among the plurality of hot water supply devices is configured to be paired with the mobile terminal to establish a first wireless communication path between the one hot water supply device and the mobile terminal,
• wherein after the one hot water supply device is paired with the mobile terminal, the one hot water supply device is configured to receive a one-time password from the mobile terminal via the first wireless communication path,
• wherein the one hot water supply device is configured to send the one-time password to other hot water supply devices among the plurality of hot water supply devices;
• wherein the other hot water supply devices are configured to be paired with the mobile terminal using the one-time password to establish wireless communication with the mobile terminal.