SRM8 Serial Relay Module 8-Channel (SPI, 5-40V)
Prices updated: 13 Oct 2026
Compare prices
| Store | product | Price | View in store |
|---|---|---|---|
 Makers Electronics | SRM8 Serial Relay Module 8-Channel | 390 EGP | View in store |
Price history
Lowest daily price, last 90 days
Lowest price recorded: 390 EGP
About this product
The SRM8 is an 8-channel serial relay board driven through an SPI shift-register interface, which expands the output pins of a microcontroller. Relays can be daisy-chained, the board accepts a 5 to 40 V supply, and wiring uses screw terminals.
Specifications
- Number of channels
- 8 relays
- Control interface
- SPI (shift register)
- Supply voltage
- 5 to 40 V
- Expansion
- Daisy-chainable
- Wiring
- Screw terminals
Frequently asked questions
What is the price of SRM8 Serial Relay Module 8-Channel (SPI, 5-40V) in Egypt?
SRM8 Serial Relay Module 8-Channel (SPI, 5-40V) currently costs 390 EGP in Egypt.
Where can I buy SRM8 Serial Relay Module 8-Channel (SPI, 5-40V) in Egypt?
SRM8 Serial Relay Module 8-Channel (SPI, 5-40V) is available from Makers Electronics. Compare the offers above to find the best price.
How do I control the relays from an Arduino or ESP32?
Connect the control pins to the microcontroller's SPI or GPIO pins as labelled on the board, then shift out the bit pattern for the channels you want on. Use the module's example code or datasheet for the exact protocol.
Can I power the module from 5 V?
Yes, 5 V is within the listed 5 to 40 V supply range. Make sure your supply can handle the combined coil current when several relays switch on at the same time.
