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24-Channel Relay Output Board - Panel Mount

24-Channel Relay Output Board


Item# OME-DB-24RD/24

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-4 $525.74
5-9 $499.45
10-24 $488.94
25-49 $467.91
50-99 $457.39
100+ $446.88

In stock

Lead Time (If not in stock): 4 weeks
24-Channel Relay Output Board OME-DB-24RD/24 OME-DB-24RD/24
  • 24 Form C SPDT Relays
  • OPTO-22 Compatible Connector
  • Connects Directly to OME-DIO-24, OME-DIO-48, OME-DIO-144 or Other OPTO-22 Compatible Digital Output Board
  • Switch up to 0.5A at 120 Vac Switch up to 1A at 24 Vdc

OME-DB-24RD/24 Model Options

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Supply Voltage
Form Factor
Number Of Channels
Output Type
Max Current/Relay
Max Switching Voltage

The OME-DB-24R consists of 24 form C, electromechanical relays for efficient switching of load by programmed control. The contact of each relay can control a 0.5 A /110 V load or 1 A/24 Vdc. The relay is energized by applying a 5 V signal to the appropriate relay channel on the 50-pin OPTO-22 compatible connector or 37-pin D-Sub connector. Twenty-four enunciator LED’s, one for each relay, light when their associated relay is activated. To avoid overloading your PC ’s power supply, this board needs a +12 Vdc or +24 Vdc external power supply.

Relay Type:
24 form C SPDT
Nominal Load: 0.5 A @120 Vac,1A @24 Vdc
Maximum Switching Power: 60 VA,24 W
Maximum Switching Voltage: 120 Vac,60 Vdc
Maximum Switching Current: 1A
Life Expectancy: mechanical (2 x 107), electrical (2 x 105)
Time Value: operate (6 ms)
Control Logic: input TTL high (+5 V)current, relay on
Power Consumption: +12 V @528 mA max; +5 V @150 mA max
Dimensions: 132 H x 225 mm W (8.1 x 4.5')
Operating Temperature: 0 to 60°C (32 to 140°F)
Storage Temperature: -20 to 70°C (-4 to 158°F)
Humidity: 5 to 90% RH non-condensing
Connector: OME-DB-24, one 50-pin header; OME-DB-24RD,
one 50-pin header and one 37-pin D-sub connector
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On page 26 of the manual, the numbering on the right side of the 37-pin D-sub connector seems non-standard. Should standard D-sub numbering (1-19, bottom to top) be used?

Asked by: P126
Thank you for your question. We will require more information to help on this question, please email the DAS team at DAS@OMEGA.COM.
Answered by: Application Engineer PV
Date published: 2021-09-30

Do you offer a ACAD download of the 24-Channel Relay Output Board?

Asked by: Ron T
Thank you for your question. We do not provide a Cad drawing just dimensions in the manual you can download from the website.
Answered by: Cheetah
Date published: 2021-02-05

Does this board require an external 5V power supply in addition to 12/24V? I am unsure if the +5V lines shown on page 26 of the manual are for supply or reference.

Asked by: P126
Hello Regarding your question, if you are referring to the +5VDC on the board, that is to specifically power up the relays on the board, whereas the 12VDC/24VDC connection is to power up the board itself.
Answered by: JA Engineer
Date published: 2021-10-05

The manual doesn't provide mounting hole spacing, only outer board dimensions. Can you provide the hole spacing since there are no CAD models?

Asked by: dstix747
Thank you for your questions. Diameter is 4mm for the holes. Spacing is 210mm and 122mm.
Answered by: Engineer DA
Date published: 2024-05-20
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