Dual SPDT Relay Board, Opto Isolated, for Arduino, ARM


Dual SPDT Relay Board, Opto Isolated, for Arduino, ARM
Images/31357-large.jpg Images/360-3D.jpg   California Proposition 65 Warning
Stock Number: 31357 MP
 Review Average:  
 Number of Reviews: 4
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$3.95


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Detailed Description

Dual relay board designed to be driven by a Arduino, PIC, AVR or other micro controllers. Freeware available through www.arduino.cc.en & others on-line
LED indicatorsfor power & input.
Power: 5VDC @ 20mA/channel
Jumper Select either CPU Power or external.
Jumper Select either shared CPU & external Ground
or Total Isolated Ground.
Input: .1in. header with Vcc, Gnd, and input.
Input Signal: Ground energizes relay(s)
Contacts: SPDT 10A @ 28VDC,30VDC,125VAC,250VAC
Output: Terminal strips
L: 1-11/16" W: 1-5/8" H: 3/4" WT: .04


View PDF Data Sheet

California Proposition 65 Warning WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov
(This item was manufactured prior to August 31st, 2018)
Click to see Why is this here? As of August 2018 the State of California has changed the requirements of the “Prop 65” law. We now must list on our website any possible chemicals the can cause cancer, birth defects or reproductive problem.

As an example:
   ABS plastic contains styrene
   PVC wire insulation can contain Di(2-ethylhexyl)phthalate (DEHP)
   electrolytic capacitors can contain Ethylene glycol
   Brass can contain Lead
   flame retardant pc boards can contain Tetrabromobisphenol A (TBBPA)
   Aluminum alloys can contain Chromium

To put it simply we are a small company and do not have the resources to test every single part, so we list every thing as hazardous. Please recycle all electronic parts responsibly and under no circumstance eat, drink or smoke these parts and wash your hands after touching!


 Product ReviewsClick here to review this item
Similar to SainSmart Board
See http://www.sainsmart.com/arduino-pro-mini.html. Theres a schematic there. This board is a little different with jumpers to connect the VCC and GND either separately or in common.
- David Hartman, NJ
 
Isolation and Snubber
Without a schematic, this is just a guess: The Arduino device is isolated with optical couplers, and the flyback kick from the relay coil is suppressed with snubber diodes . Both the couplers and diodes appear to be on the board.
Steve Hollis
 
Needs documentation
I have not used my recently acquired board yet, but will soon. However, Im using it to switch a 120V low-current AC motor and would like to verify how the isolation is done and make sure I can trust the board. I need documentation to do that or I may have to use another product to be sure of UL conformance. Ill add stars when I can tell how it was designed.
DLC
 
Great Value
This relay board is a great value. The board is less expensive than the individual components. Almost all relays draw too much current to be powered directly from an Arduino pin. This is a good solution! Use a diode, across the load connected to the relay, to block electrical noise interference with your Arduino.
- Carl W, IL