Four 12VDC Relay Card on DIN Rail Mount
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SKU : RLD-124
Quantity on Hand : 2
Skill Level : Assembled and Tested

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22.55 22.55 USD 22.55


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Description: Four 12VDC Relay Card which can be clipped onto top hat DIN Rail These would have to be the most versatile relay cards on the market. Each relay can be operated by TTL levels, NPN and PNP open collector or 0 to 12VDC. Each relay has two inputs, marked LO and HI. As the names suggest a low on the LO input will operate the relay. Similarly a high on the HI input will also operate the relay.


  • Each single pole changeover relay contacts SPDT will switch 10A/24VDC , 10A/50VAC

  • Coil Resistance for the relays is 400ohm(12V)

  • Current consumption for 2 relay card (12V)

  • All relays off 4mA

  • One relay on 37mA

  • Two relays on 70mA

  • A LED shows the state of each relay

  • The Relay Cards are available in 12VDC or 24VDC (for 24VDC email us to specify; stock is 12VDC)

  • Four 3.5mm holes in each corner allow easy mounting on a panel

We have operated these relays from an old style TTL 7404 Hex Inverter which have less drive capacity than the newer HC and HCT types. The inverter could operate the relay with both a low and a high output signal. But what is more important was that the High voltage dropped from 4V to 3.5V showing the output still had capacity to drive other TTL devices.


  • Operating Voltage 12VDC

  • Input low voltage (LO) 0 - 0.8V

  • Input high voltage (HI) 2.4 - 12V

Dimensions of Card:

  • 2 relay card - 42(L) x 71(W) x 20(H)mm

  • 4 relay card - 86(L) x 71(W) x 20(H)mm

  • 6 relay card - 130(L) x 71(W) x 20(H)mm

  • 8 relay card - 174(L) x 71(W) x 20(H)mm

Documentation and Downloads