Relay cards
A wide selection of relay cards for your project.
- 1 Channel Optically Isolated Relay Card 24VDC$3.49
SKU: 1RLY24V
1 relay with logic level input and a 24 volt coil. Learn More - 1 Channel Optically Isolated Relay Card 5VDC$3.49 As low as $2.95
SKU: 1RLY5V
Single relay module micro controller input, 5 volt coil. Optically isolated. With logic level trigger Learn More - 1 Channel Relay Card 12VDC$2.75
SKU: 1RLY12V
Single channel optically isolated relay module, 12 volt coil.
Learn More -
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- 16 Channel Relay Card 12 VDC (Assembled)$14.95
SKU: 16RLY12V
16 relays on one card, logic level inputs, 12 volt coils. Learn More - 2 Ch Learning IR Receiver Ver 2.0$34.95
SKU: VK038
Two 10 amp SPST relays on a small PCB form a simple remote control. Good for 5 amps per connection.
ASSEMBLED & TESTED Learn More - 2 Channel Optically Isolated Relay Card 12VDC$4.25 As low as $3.50
SKU: 2RLY12V
2 x 12 volt relays with opto isolators and screw terminals Learn More - 2 Channel Optically Isolated Relay Card 12VDC$5.95 As low as $5.25
SKU: 2RLY12V-R
2 x 12 volt relay card with opto isolators and screw terminals Learn More - 2 Channel Optically Isolated Relay Card 24VDC$6.50 As low as $5.95
SKU: 2RLY24V
2 x 24 volt relays with opto isolators and screw terminals Learn More - 2 Channel Optically Isolated Relay Card 5VDC$3.95 As low as $3.00
SKU: 2RLY5V
Double relay card with logic level inputs and 5 volt supply for the coils Learn More - 2 Channel serial Relay I/O card$34.95
SKU: VK039
Mini 2 channel Relay card for simple control functions from your PC or Arduino. NEW ITEM
Assembled & Tested Learn More - 2 channel solid state relay 5V OMRON SSR G3MB-202P Solid State Relay with Resistive PICO Fuse$5.49 As low as $4.50
SKU: 2CHSSR-1
Dual channel Solid state relay module. 0 - 240 VAC at 2 amps. Learn More - 3 Output Relay Digital Access Control Keypad$84.95
SKU: HAA2866N
This RFID card or FOB reader works on 12 volts DC Learn More - 4 Channel Optically Isolated Relay Card 12VDC
SKU: 4RLY12V-R
4 x 12 volt relay card with opto isolators and screw terminals Learn More - 4 Channel Optically Isolated Relay Card 24 VDC$5.99 As low as $5.39
SKU: 4RLY24V
4 x 24 volt relays with opto isolators and screw terminals Learn More - 4 Channel Optically Isolated Relay Card 5VDC$4.95 As low as $4.50
SKU: 4RLY5V
4 Channel Optically Isolated Relay Board 5VDC Learn More - 8 Channel Relay Card 24 VDC (Assembled)$9.95
SKU: 8RLY24V
8 x 24 volt relay card with opto isolators and screw terminals Learn More - 8 Channel Relay Card with ESP8266 12VDC (Assembled)$18.95
SKU: ESP8RLY12V
8 relays on one board, wired to an ESP8266. 12 volt.
Learn More - 8 Channel Remote Relay Kit$34.95
SKU: K8056
Use relay card as stand alone, addressed by switches or open collector outputs or remote controlled through RS232. Use with your Arduino or Raspberry Pi. Learn More - 8 channel serial relay module$89.95
SKU: VA108
8 channel serial relay module with RS232 interface and USB connection. Also includes 4 optically isolated inputs. Learn More - Delay Power Off Relay$6.95
SKU: DPWOFFRLY
1 Channel Delay Power-Off Relay Module with Cycle Timing Circuit Switch Learn More -
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