NovaStar MFN300-B Multifunction Box | Power & Sensor Control
$ 148.00
The NovaStar MFN300-B adds eight power-switch control channels, two sensor ports, timer functions and an audio output to an LED display system. It communicates over RS232 or Gigabit Ethernet and uses an AC 100–240 V, 50/60 Hz supply.
10000 in stock
MFN300-B power switching and sensor connections
The NovaStar MFN300-B is an enclosed multifunction box for LED display auxiliary control. It provides scheduled switching, sensor inputs and audio output. The timer function can take the place of a timer and delay device in the documented control arrangement.
| Parameter | Specification |
|---|---|
| Communication | RS232 serial or Gigabit Ethernet |
| Power-switch control | 8 channels |
| Power-switch rating | AC 250 V / DC 30 V; rated current 3 A |
| Sensor ports | 2; RS485 communication |
| Audio output | 1 port |
| Input power | AC 100–240 V, 50/60 Hz |
| Rated input current | 0.05 A |
| Maximum power consumption | 5 W |
| Operating temperature | −20 to +75 °C |
| Operating humidity | 0%–90% RH, non-condensing |
| Dimensions | 204.0 × 163.0 × 48.0 mm |
| Net weight | 1154.6 g |
| Certifications listed | FCC; IC |
The switching-contact rating is separate from the box’s AC input rating. Verify the intended circuit and control arrangement against the specification before wiring a distribution box.
Where to connect the MFN300-B
V2.0.4 shows three arrangements: a direct RS232 cable to a computer; an Ethernet connection between the sending card or independent controller and the first receiving card; or a connection after the last receiving card. The earlier page suggested placement between two receiving cards, but that arrangement is not shown in this specification. Use the documented topology for the installed system.
Light and environmental sensors
The two sensor ports can connect light sensors for automatic brightness adjustment or other peripherals such as temperature sensors. The specification also lists power-distribution-box temperature detection. Earlier page text mentioned humidity detection and a temperature/humidity module; V2.0.4 does not confirm built-in humidity sensing or name a supported humidity module. Confirm the required peripheral before relying on that function.
| Parameter | Specification |
|---|---|
| Pin 1 | VDD5.0 |
| Pin 2 | GND |
| Pin 3 | RS485 A0 |
| Pin 4 | RS485 B0 |
Product images
Download specification
MFN300-B multifunction box specifications — V2.0.4 (PDF)
Frequently Asked Questions
What does the NovaStar MFN300-B control?
It provides eight power-switch control channels, timer functions, two sensor ports and one audio output. The sensor ports can support automatic brightness adjustment when suitable light sensors are connected.
Where should the MFN300-B be installed in the signal chain?
V2.0.4 documents installation before the first receiving card, between it and the sending card or independent controller, or after the last receiving card. Direct RS232 connection to a computer is also shown.
What are the power input and switch ratings?
The box input is AC 100–240 V at 50/60 Hz, with 0.05 A rated input current and 5 W maximum consumption. The power-switch control rating is AC 250 V / DC 30 V and 3 A. These are different ratings for different connections.
Can it automatically adjust screen brightness?
Yes, the specification supports connecting light sensors through its two sensor ports for automatic brightness adjustment. Sensor ports use RS485; check the supported sensor and pinout before connection.
Does the MFN300-B include humidity sensing?
The earlier listing mentioned humidity detection, but the linked V2.0.4 document confirms temperature detection and sensor connections without specifying built-in humidity sensing. Verify the required humidity peripheral and system support before selecting it for that purpose.
| Weight | 1.87 kg |
|---|
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