Instructions for sensor magnetic contact
The magnetic contact sensor belongs to the group of security sensors. This sensor reports the opening and closing of doors, windows, and roller shutters. As soon as a window or door is opened or closed, the Ethernet-based monitoring device alerts the responsible personnel via email and/or SMS (via GSM/LTE modem or web-to-SMS server). The notification can also be transmitted via SNMP traps to DCIM, building management, or network management software. The status (open/closed) of the magnetic contact connected to the monitoring device can also be queried remotely via SNMP commands over a TCP/IP network or web interface.
This allows for the monitoring of unmanned technical sites and power supply systems. Additionally, an alarm siren with a built-in strobe light connected to the monitoring device can signal the opening of a door or window.
This is particularly useful for monitoring unmanned technical sites and power supply systems. The Didactum magnetic contact sensor comes with the following:
- Sensor unit with 2 connecting cables and permanent magnet
- 2 x double-sided adhesive strips
- 4 x Phillips head screws
Mounting the magnetic contact sensor on the window or door
The magnetic contact sensor consists of a sensor unit (including two connecting cables) and a magnet. The sensor unit is attached to the window or door frame. It can be mounted horizontally or vertically. Use the included mounting tape or Phillips head screws to attach the sensor unit. When using the mounting tape, the surface must be clean and dry. Clean the surface beforehand with glass cleaner. The magnet is attached to the window or door parallel to the sensor unit. Use the mounting tape or Phillips head screws to attach it.
Technical Note:
Alternatively, you can also use epoxy resin or silicone adhesive to attach the magnetic contact sensor.
Each pair of digital/potential-free input contacts shares the grounding.
Connecting the magnetic contact to the monitoring device
Every IP-based monitoring device from Didactum is equipped with inputs for digital/dry contacts. Connect the two connection cables of the sensor unit to the corresponding green Phoenix connector on the monitoring device. The labeled cable is inserted into input 1 and secured with a screwdriver. The other cable is connected to the ground terminal.
If you wish to connect an additional magnetic contact, insert the labeled cable into input 2 and the unlabeled connection cable into the common ground terminal in the center of the connector and connect it. Please ensure that the connection cables are correctly connected. Then, insert the green Phoenix connector into the input labeled "Dry Contacts" on the Didactum monitoring device.
Since we have a magnetic contact connected, we select "Door."
Next, we define the mode of the magnetic contact.
Here, we select "Normally Closed" because we want to be alerted when the door or window is opened.
Then, we assign a custom name to the magnetic contact.
In our case, we chose "Door Contact Server Room Nuremberg."
Click "Apply" to save the settings.
Configure door/window contact in the web interface
Simply log in to the web interface of your Didactum Monitoring System using the web browser on your smartphone, tablet, PC, or laptop. In the "System Tree" under "Dry Contacts," you will see the input contacts for digital/potential-free contacts. Since we have connected the magnetic contact to input 1, we click on "Dry-1" and configure it as follows:
Here, we define that if (IF) the "Nuremberg Server Room Door Contact" reports an "Alarm," then (THEN) a "Message" must be sent via "Microsoft Exchange."
We then name the alarm "Email Alarm: Server Room Door Opening, Nuremberg" and click "OK."
Please remember to save the settings permanently in the monitoring system by clicking the floppy disk icon.
Notification and alarm when the door/window is opened
fter configuring the magnetic contact sensor, we set up immediate email notifications in the web GUI under "logical schema". Email sending via the Microsoft Exchange Server was previously configured and successfully tested under "system tree".
Further information on the sensor magnetic contact
The SNMP OID of the door contact connected to the potential-free input No. 1 is "101001". You can load the didactum.mib file directly from the monitoring device under "System Settings" => "SNMP" and import it into your DCIM software or network management system (e.g., Nagios, Icinga, OpenNMS, PRTG, WhatsUp Gold, etc.) using the MIB browser. All events, such as the opening and closing of the server cabinet door, are also stored in the monitoring system's syslog, including the time and date.
You can also upload a diagram of your (IT) infrastructure created with Microsoft Visio to the monitoring system's alarm map. The door opening can then be displayed as a flashing indicator on the map. The magnetic contact sensor's connection cables can be extended up to 100 meters if desired. Simply select a suitable signal cable and solder it on.
If desired, individual magnetic contacts can also be connected in series to monitor the opening of multiple doors and/or windows. Please note that when connecting door/magnetic contacts in series, you will only receive a general door/window alarm. If you wish to connect a larger number of door and window contacts to the Didactum Monitoring System and monitor them individually, the expansion unit with up to 64 inputs for potential-free/digital contacts is recommended.
Didactum Magnetic Contact Sensor
