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Cisco Meraki

Viewing MT40 Metrics


This article outlines the UI elements of the MT40 Smart Power Controller details page under Sensors > Sensors

Sensor Data Tab


When a user navigates to a specific sensors details page, the data is as presented below

Device Information Header

This contains the Device Name, Model, MAC Address and Status (Online or Offline) as well as the sensor navigation bar.

Data Time and Value Picker

This section allows a user to pick the time period displayed on the charts. These charts use aggregated data to ensure optimum page performance, however this means that certain data points can appear averaged out. In order to view complete data, the user can select between Average, Maximum and Minimum values for that resolution window.

Time frame Resolution
<2 hours 15 sec
>2 hours <24 hours 2 minutes
24 hours - 1 week 15 minutes
1 week - 30 days 1 hour

Assigned Camera

This section is only visible if a camera is associated with this sensor. Along with a livestream of the camera, a timestamped list of triggered alerts and a snapshot of that time.

Device Readings Charts

These are the charts to display all the readings taken by the MT40, in a similar fashion to other MT devices. The sensor details page outlines the following metrics:

  • Energy - Total energy consumption (kWh)
  • Real Power - Real power consumption of downstream device (W)
  • Apparent Power - Total power consumption of downstream device (VA)
  • Voltage - Difference in electric potential between two points (V)
  • Current - Amount of electricity flowing through (A)
  • Power Factor - Percentage ratio of real power over apparent power (%)
  • Frequency - Rate at which current changes direction per second (Hz)

Device Details Tab


This tab outlines the device details. 

Device Details Sidebar

This sidebar is where Location, Serial, Alert Profiles, Tags, Notes and Firmware information can be found. This is a similar sidebar as can be seen on other MT pages. This section also allows you to quickly add this sensor to Alert Profiles and Tag groups by clicking the edit button (pencil icon).

Signal Strength Table

This is a visual representation of the Gateways which can see this sensor, as well as the signal strength. The color and status of the RSSI is based on 3 bounding values:
🟢 = Stronger than -65 dBm
🟡 = between -65 and -85 dBm
🔴 = Weaker than -85 dBm. All connections will be rejected when RSSI <= -85dBm.

The Gateway with the most recent “Last Connected” is when the sensor connects to that specific gateway. “Last Reported” was the last time the Gateway received an advertisement from this sensor.

Power Controls Tab


The MT40 Smart Power Controller also allows users to control downstream power status from the Power Controls page. This page also allows the user to view the current status of the MT40 power, lockout switch and the power event log:

Power Control Panel

This panel allows the user to issue power commands, view the status of the remote lock-out switch and view the status of the downstream power.

NOTE: The Power Controls feature is only available when the gateway firmware meets the Minimum Requirements. 

Next to the Remote Power Controls, the user can get the current status of the physical remote lock-out switch:

  • Enabled = Unlocked State. Allows users to remotely execute power commands.
  • Disabled = Locked State. Disables all power commands.

NOTE: When the lock-out switch is in Disabled state, the downstream power will be ALWAYS ON.

The Downstream power toggle shown reflects the current state of the downstream power, in the screenshot above it is displaying the downstream power is enabled. This toggle can be clicked to issue a power off command to and vice-versa.

NOTE: Downstream power state will persist on upstream power outages. For example, if a downstream power state is OFF and there’s an upstream power outage, the MT40 will persist the OFF state when the upstream power is restored. 

Start power cycle button will send a power cycle command to the MT40, this will power off the device, wait 10 seconds and then power it back on. To be able to issue a power cycle command, downstream power must be in the enabled state. While the power cycle is running, you’ll be able to see the power off and on reflected in the downstream power toggle state.

Ensure that the downstream device is NOT powering any MT gateways. This will cause the MT sensors unable to receive any further commands. In case, the only gateway is no longer reachable, the only way to recover the power state is to toggle the physical remote lock-out switch.

Power Event Log

This is a record of all power commands which have been issued to the sensor. It contains details about the user who attempted the command, their email address and the command which was attempted. The time of these events is shown in the network timezone.

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