2-Channel SPDT Relay Board: RLY102


RLY102-12V-DIN
(click image to enlarge)
  • Provides quick and easy relay wiring
  • Two SPDT relays and drivers
  • Accepts TTL logic level control inputs
  • Available in 5V, 12V, and 24V coil voltages
  • Screw terminal connections
  • Convenient for CNC projects
  • LED indicator for each relay
  • Relay contacts rated for 15A at 250VAC
  • Available in rubber feet or DIN rail mount

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See Also: 4-Channel Relay Boards,   All Relay Boards


General Description

This relay board provides a convenient way to add relay outputs to your project, allowing you to switch high-current loads such as AC appliances, motors, and more. This board includes two SPDT relays, logic-level relay driver circuits, and protection diodes. Simply provide the board with power, connect your logic-level signals to the inputs, and the relay contacts are ready to use. The relay contacts are electrically isolated from the rest of the board, which allows the board to be used in a wide variety of applications, including both AC and DC loads.

With this relay board, any logic-level signal (5V) or higher-voltage signal (up to 30V) can be used to control a relay. Examples of logic-level signals include the outputs of a PC's parallel port or a microcontroller's output pins.

The board is available with three different relay coil voltages (5, 12, 24 VDC), allowing you to choose whichever is most conveniently available for your project. Suitable wall power supplies for the 5V and 12V models are available below.

Please note that the relay coil voltage you select has no effect whatsoever on the voltages you can switch with the relay contacts. Also note that the relay coil voltage you select does NOT affect what voltage is needed for the input control signals. For any of the coil voltage options (5, 12, or 24V), an input control signal from 2.7VDC up through 30VDC will activate the relay. See datasheet for input current requirements.

Mounting Options

These products are available in two different mounting variants. Product numbers ending with -DIN come with DIN clips already installed and ready to snap onto 35mm or 32mm DIN rail. Product numbers ending with -FT have stick-on rubber feet installed on the bottom side, allowing for benchtop use or panel mounting. For panel mounting, we suggest 1/4" nylon standoffs under the mounting holes, and #6 screws.
RLY102-12V-DIN
DIN Rail Mount
RLY102-12V-DIN
Click image to enlarge.
Rail not included
RLY102-24V-FT
Rubber Feet
RLY102-24V-FT
Click image to enlarge.

Product Documents

Part # DescriptionData SheetSchematic
RLY102RLY102 2-Channel Relay Board
RLY102
RLY102 2-Channel Relay Board

Product Details

  • Two SPDT relays and drivers
  • Accepts TTL logic level control inputs
  • Available in 5V, 12V, and 24V coil voltages
  • LED indicator for each relay
  • Relay contacts rated for 15A at 250VAC
  • Screw terminals for control inputs(accepts 16-26 AWG wire)
  • Screw terminals for contacts (accepts 12-24 AWG wire)
  • 0.1" header provided for input control signals (in additional to screw terminals)
  • Power supply may be connected via DC power jack or via screw terminals.
  • Approximate dimensions: 3.0" x 3.7"
  • Available in rubber feet or DIN rail mount


Pricing and Ordering

Product # Description 1+ 10+ RoHS Buy Now
5V Power:
RLY102-5V-DIN Relay Board, TTL, 15A SPDT, 2 relays, 5V DC, DIN Rail Mount $34.50 $31.50 Yes
RLY102-5V-FT Relay Board, TTL, 15A SPDT, 2 relays, 5V DC, Feet $33.00 $30.00 Yes
WSD050-10-0 Wall Power Supply, Switching, 5VDC, 1A, 5.5 x 2.1mm Barrel, Center Positive, 90-264VAC Input $6.95 $6.50 Yes
12V Power:
RLY102-12V-DIN Relay Board, TTL, 15A SPDT, 2 relays, 12V DC, DIN Rail Mount $34.50 $31.50 Yes
RLY102-12V-FT Relay Board, TTL, 15A SPDT, 2 relays, 12V DC, Feet $33.00 $30.00 Yes
WSD120-04-0 Wall Power Supply, Switching, 12VDC, 0.4A, 5.5 x 2.1mm Barrel, Center Positive, 90-264VAC Input $6.95 $6.50 Yes
24V Power:
RLY102-24V-DIN Relay Board, TTL, 15A SPDT, 2 relays, 24V DC, DIN Rail Mount $34.50 $31.50 Yes
RLY102-24V-FT Relay Board, TTL, 15A SPDT, 2 relays, 24V DC, Feet $33.00 $30.00 Yes
5V Power:
RLY102-5V-DIN
Relay Board, TTL, 15A SPDT, 2 relays, 5V DC, DIN Rail Mount
RoHS: Yes
Buy Now:
QuantityPrice
1+$34.50
10+$31.50
RLY102-5V-FT
Relay Board, TTL, 15A SPDT, 2 relays, 5V DC, Feet
RoHS: Yes
Buy Now:
QuantityPrice
1+$33.00
10+$30.00
WSD050-10-0
Wall Power Supply, Switching, 5VDC, 1A, 5.5 x 2.1mm Barrel, Center Positive, 90-264VAC Input
RoHS: Yes
Buy Now:
QuantityPrice
1+$6.95
10+$6.50
12V Power:
RLY102-12V-DIN
Relay Board, TTL, 15A SPDT, 2 relays, 12V DC, DIN Rail Mount
RoHS: Yes
Buy Now:
QuantityPrice
1+$34.50
10+$31.50
RLY102-12V-FT
Relay Board, TTL, 15A SPDT, 2 relays, 12V DC, Feet
RoHS: Yes
Buy Now:
QuantityPrice
1+$33.00
10+$30.00
WSD120-04-0
Wall Power Supply, Switching, 12VDC, 0.4A, 5.5 x 2.1mm Barrel, Center Positive, 90-264VAC Input
RoHS: Yes
Buy Now:
QuantityPrice
1+$6.95
10+$6.50
24V Power:
RLY102-24V-DIN
Relay Board, TTL, 15A SPDT, 2 relays, 24V DC, DIN Rail Mount
RoHS: Yes
Buy Now:
QuantityPrice
1+$34.50
10+$31.50
RLY102-24V-FT
Relay Board, TTL, 15A SPDT, 2 relays, 24V DC, Feet
RoHS: Yes
Buy Now:
QuantityPrice
1+$33.00
10+$30.00

All of the above items are normally stocked. Please call us if you need to verify availability for a specific quantity, or for pricing at higher quantities. Please visit our ordering page for our ordering policies and a list of ordering methods.
What is RoHS? If you need a RoHS version of a non-RoHS product, please contact us.