The Clock IoT Device is needed for various interfaces to devices or systems in your local network. The role of the Clock IoT Device is to create a "bridge" between the systems in your local network and Clock PMS+ API servers.

Clock IoT

The Clock IoT device is powered by a Raspberry P mini-computer that comes with preinstalled state-of-the-art system software developed by Clock. This special software enables the above-mentioned bridge to devices and software, installed in your local area network.

The Clock IoT device bundle includes:

  • Raspberry P mini computer;
  • Clock's system software licence
  • SD card with an encryption key
  • Preload of the specific services to be connected;
  • Association with the respective Clock PMS+ or Clock POS account;

Clock IoT Device is designed with strong security in mind.


The Clock IoT device requires constant OUTBOUND (outgoing) access to:
  • * TCP ports: 80, 443, 22.
  • * TCP ports: 443, 8443, 8883.
  • UDP port 123 (NTP - Network Time Protocol)
  • Clock does not provide IP ranges as they are subject to change at any moment.
  • Clock IoT doesn't need any inbound (incoming) connections/open ports.
  • The Clock IoT Device requires DHCP in the network to automatically obtain its IP address. Fixed IP addresses are not supported.
  • Keep in mind that Clock IoT device may need to be placed in the same network as the third party device/system subject to the interface (for TCP/IP protocols) or physically near to the device/system (for USB cabled interfaces). Check each interface for the specific protocol/port requirements.


  • Each Clock PMS+ account (hotel, restaurant) needs a separate device. One Clock IoT Device can't serve two or more accounts.
  • A Clock PMS+ account can support ONE Clock IoT Device only.


  • The Clock IoT device requires an Ethernet cable (not included) and power adapter (included). A Wi-Fi connection is not supported.
  • The Clock IoT device should be constantly ON. The usage of an uninterruptible power supply (UPS) is recommended. Restarting the device is strongly NOT recommended, as this may lead to device bricking.
  • Device LEDs. The green LED light (power) should be steady. The yellow LED light (SD card read/write) may blink or be steady.

Checking connections/ports

  • Contact your system administrator and find the IP address of the Clock IoT Device. The device hostname of Clock IoT Device is "clockrpi-" followed by the serial number of the device.
    Example: "clockrpi-a407a36985b48965a3e00ab85aa1e820".Clock IoT

    Example host name and local IP in a router

    Clock IoT

    Example hostname and local IP in a router

    Successful connection test:

  • Clock IoT Open a browser and enter the device IP address.
  • Clock IoT Device test connection page will be opened.
  • Select "Test connection" button.
  • The test may take up to 5 minutes if there are closed ports or unreachable services.
  • Check the results. All Items in "Port checking" section should be ".... is opened". All Items in "Service checking" section should be ".... is successful".
  • Contact your system administrator to set up your firewall if needed.
  • If the Clock Support Team requests the device "log files", select "Device log file" link at the bottom of the page. Save the page ("File" > "Save Page As ...") and send the file to the Clock Support Team.