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MSD series (RS232 ver.)
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Tongdy MSD series is a line of commercial indoor air quality monitors.

The RS232 version of the MSD series was in production prior to December, 2019,
with board serial numbers ending with "C", "M0" or "00".

Specifications
==============

* Power: AC 100-240V to DC 24V power adapter
* Connectivity: WiFi / Modbus via RS-232

Measurement Fields
------------------

* PM2.5
* PM10
* CO2
* TVOC
* Temperature
* Relative humidity

Configuration
=============

To access the configuration page of the monitor, follow the steps below:

#. Power up the monitor
#. Use a sharp pin to press and hold the "RESET" pinhole button on the side of the monitor for at least 6 seconds

#. Connect a computer or a smart phone to the wireless hotspot created by the monitor; its SSID (network name) should
   start with *MXCHIP*
#. On the web browser of your device, type *10.10.10.1* or *10.10.10.1/index.html* in the address bar and enter

   * ``Username``: *admin*
   * ``Password``: *admin*

You may now set up the monitor on the configuration page according to the following instructions:

* To gather the information required for adding the monitor to the gams platform, see
  :ref:`monitors/tongdy/msd_rs232:Monitor Information`
* To connect the monitor to a WiFi network, see :ref:`monitors/tongdy/msd_rs232:WiFi Setup`
* To configure the monitor to send data directly to gams platform through **TCP**,
  see :ref:`monitors/tongdy/msd_rs232:TCP Setup`

Do not opt to reboot the monitor after you save each change. Only after you've done all the configuration needed:

#. Click ``Module Management`` on the left sidebar menu
#. Under the ``Module Reboot`` section, click on ``OK``

Monitor Information
-------------------

Its **UUID** is on the ``Device SN`` line under the ``Version Information`` section of ``Module Management`` or
labelled on the side of the monitor, starting with "MSM".

WiFi Setup
----------

#. Click on ``Wifi Mode Select`` on the left sidebar menu
#. Select ``AP and Station`` and click on ``save``
#. Click on ``Station Mode Setting`` on the left sidebar menu
#. Under the ``Station Parameter Setting`` section, click on ``scan`` to select the wireless network you wish to connect
   the monitor to or manually enter the ``SSID``
#. For ``Encryption Mode``:

   * If the WiFi network does not require a password, select *Disable* and click on ``save``
   * If the WiFi network requires a password, select *Enable*, enter the ``Password`` and click on ``save``

TCP Setup
---------

#. Click on ``Network Setting`` on the left sidebar menu
#. Under section ``Network Connection Setting``, change the following options:

   * ``Protocol``: *TCP Client*
   * ``Remote Port``: *8102*
   * ``Server Address``: *bridge.measureofquality.com*