HD-Y1 relay and monitoring card
The Huidu HD-Y1 provides auxiliary control for an LED display installation. It combines relay switching, scheduled power control, audio output and cabinet temperature/humidity monitoring. Its Gigabit Ethernet connection supports use with the T901 synchronous sending card.
Product parameters
| Parameter | Specification |
|---|---|
| Model | Huidu HD-Y1 |
| Communication | Gigabit Ethernet |
| Documented sending-card connection | T901 synchronous sending card |
| Cascade positions | Before, between or after receiving cards |
| Relay switching | 8 channels |
| Scheduled switching | Timed relay control supported |
| Audio output | 1 channel |
| Cabinet monitoring | Onboard temperature/humidity module |
| External sensors | Single temperature or temperature/humidity module |
| P5 sensor interface | 18B20 single-temperature |
| P6 sensor interface | AM2301 temperature/humidity |
| Brightness sensor | Dedicated interface |
| Power connection | 5V; 2 power interfaces |
Planning the connections
The card can sit before the first receiving card, between receiving cards or after the last receiving card. Match the external sensor to the correct sensor interface. Use the appearance diagram below to identify the relay terminals, power connectors and network ports before wiring.
Frequently asked questions
How many relay channels does the HD-Y1 provide?
It supports 8 relay switching channels for power control. Check the installation’s electrical requirements before connecting the load.
Can the HD-Y1 switch power on a schedule?
Yes. It supports timed relay switching, allowing scheduled power-control operation.
Does it measure cabinet temperature and humidity?
Yes. It has an onboard temperature/humidity module and supports external single-temperature or temperature/humidity modules.
Where can it be placed in the receiving-card chain?
The documented connection positions are before, between or after receiving cards, with Gigabit communication to the T901 sending card.
Which sensor connects to P5 or P6?
P5 is the 18B20 single-temperature interface. P6 is the AM2301 temperature/humidity interface. Match the sensor to the labeled connector.
Appearance diagram and PDF download
1：Audio output port;
2：Gigabit Ethernet port, connected to the sending card or another receiving card, the same as the two network ports, interchangeable;
3：Power interface, connected to 5V voltage;
4：Power interface, connected to 5V voltage;
5：Contact opening and closing terminal, connecting screen power supply, air conditioning power supply and fan power supply;
6：P5, single temperature (18B20) interface; P6, temperature/humidity (AM2301) interface;
7：Brightness sensor interface;
8：No function at present;
9：Onboard temperature/humidity module.
Download Specification:
Huidu HD-Y1 Multi-function Card Specification
