The NovaStar MON300 monitor card collects LED cabinet status information for display engineering projects. The Rev2.1.0 specification identifies the MRV320 receiving card as its companion device. MON300 monitors cabinet conditions, power-supply voltage and fan speed; LED and ribbon-cable fault checks require the supporting hardware described below.
MON300 monitoring specifications
| Function | Capability or requirement |
|---|---|
| Companion receiving card | MRV320, as specified in Rev2.1.0 |
| Power-supply voltage detection | 8 channels |
| Fan-speed detection | 4 channels |
| Cabinet temperature | Supported; no extra sensing module required |
| Cabinet humidity | Supported; no extra sensing module required |
| Cabinet door | Open/closed status detection |
| LED open/short-circuit detection | Requires a supporting driver IC |
| Flat/ribbon-cable fault detection | Supported |
| Monitoring HUB | Required for LED-status inspection and flat-cable detection |
Plan the monitoring connections
Match the MON300 to the receiving card and monitoring HUB used in the cabinet. Temperature and humidity detection do not require an extra sensing module, but this does not remove the HUB requirement for LED-status or ribbon-cable checks.
The voltage and fan-speed channels are detection inputs. Their channel counts describe how many supplies and fans can be monitored, not a power-output rating. Follow the specification’s connection diagrams for the installation.
Product images


Specification download
Download the NovaStar MON300 Rev2.1.0 specification PDF
MON300 FAQ
Which receiving card works with the MON300?
The Rev2.1.0 specification supplied with this listing names the MRV320. Confirm the receiving-card model, board revision and matching documentation for your installation.
How many power supplies and fans can MON300 monitor?
It provides eight power-supply voltage detection channels and four fan-speed detection channels. These are monitoring functions.
Do I need extra modules for temperature and humidity detection?
No extra sensing module is required for the listed cabinet-temperature and humidity detection functions.
Can MON300 detect failed LEDs and ribbon cables without a HUB?
A monitoring-card HUB is required for LED-status inspection and flat-cable fault detection. LED open/short-circuit detection additionally depends on a supporting driver IC.
Can MON300 detect an open LED cabinet door?
Yes. Cabinet door open/closed status detection is listed among its monitoring functions. Use the matching connection diagram in the specification when setting up the cabinet.





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