Does this work with a particle photon?

I found that the series 3 denuralizer’s photon emitter is phased incorrectly being effected by the relay fly back current, thus under the wave particle duality presumption the photons are not behaving in a sinusoidal manner. Try using 7v for supply voltage.

what does the jumper do?

You can remove the jumper to provide a different power supply (JD-VCC) to the relay actuation circuit from the one used by the host controller and to the LED side of the optocouplers. According to the relay spec, the nominal current draw is 71mA, and if for a 8 relay board that would be 568mA, and if you turn on all 8 relays simultaneously, you'll need 2-3 time more to achieve the latency.

Just purchased one of these. Can I hook it directly to the Raspberry Pi or do I need to use a Mosfet or Opto Isolator?

Based on the picture, this 2 relay shield already has opto isolators for both relays (that is what the two 4 pin modules are). Raspberry Pi uses 3.3V and this uses 5V, so you may want to use a level shifter (or an NPN transistor with two resistors) to keep from overloading the Pi output.

Is this a mechanical relay or an SSR? I am looking for something that will not make an audible sound when switching, and can provide very fast respons

It's a mechanical relay and makes a click, but it is not very loud. There are ssr "relays" available. Make sure to use a good heat sink if you need to switch any real current.

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5V 8 Channel Relay Shield Module for Arduino R3 2560 1280 ARM PIC AVR STM32 Raspberry Pi 3, 2 Model B & B+

Product ID: 7893719

Details

Brand
SunFounder
Connector Type
Plug-In
Current Rating
10 A
Mounting Type
PCB Mount
Operation Mode
Automatic

⚡5V coil voltage for low power control

💡LED indicators for real-time relay status

🔌8 high-current relay channels, 10A each

8015 Ft

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Sold byAmazon HungaryDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔗 Unlock Industrial-Grade Control with a Click — Your Smart Projects Deserve This!

COMPACT DURABLE DESIGN - Slim 14cm x 5.7cm shield fits perfectly on your PCB mount with CE and RoHS certifications for safety and reliability.
REAL TIME STATUS FEEDBACK - Integrated LED indicators keep you instantly informed of relay activation—no guesswork, just control.
POWERFUL 8 CHANNEL CONTROL - Manage up to 8 devices simultaneously with robust 10A relays for industrial-grade switching.
EFFORTLESS INTEGRATION AUTOMATION - Standard interfaces and low 15-20mA driver current make automation projects smoother and more energy-efficient.
SEAMLESS MICROCONTROLLER COMPATIBILITY - Plug-and-play with Arduino, Raspberry Pi, ARM, PIC, AVR, and more for ultimate project flexibility.

The SunFounder 5V 8 Channel Relay Shield is a compact, high-performance interface board designed for seamless integration with popular microcontrollers like Arduino and Raspberry Pi. Featuring 8 high-current relays rated at 10A each, it supports reliable switching of AC and DC loads with real-time LED status indicators. Certified for safety and efficiency, this shield empowers professionals and makers to automate and control multiple devices effortlessly in industrial and DIY projects.

Specifications

ASIN	B00DR9SE4A
Best Sellers Rank	#52,569 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #79 in Single Board Computers (Computers & Accessories) #803 in Industrial Electrical Controls & Indicators
Brand	SunFounder
Brand Name	SunFounder
Coil Voltage	5 volts
Connector Type	Plug-In
Contact Current Rating	10 A
Current Rating	10 A
Customer Reviews	4.6 out of 5 stars 1,303 Reviews
Item Weight	9.07 g
Manufacturer	SunFounder
Maximum Switching Current	10 A
Minimum Switching Voltage	5 volts
Model	8C-5V
Mounting Type	PCB Mount
Number of Items	1
Number of Packs	1
Operation Mode	Automatic
Part Number	8C-5V
Specification Met	Ce, Rohs, and Other Relevant Electrical Performance, Safety, and Environmental Standards
UPC	520141420814
Unit Count	1 Count
Warranty Description	1 Month
Wattage	50 watts

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