but it is a nice, cheap relay. You can use it to control low voltage or line voltage (i.e. switch a power outlet on and off) from an Arduino. I'm using mine with an Arduino to convert a chest freezer into a kegerator by overriding the internal thermostat of the freezer.
The connections to your Arduino (or whatever) are:
VCC - supply voltage. 5V from my Arduino.
IN1 - set to HIGH to set the relay to its "default" state, set to LOW to switch the relay to its alternate state
IN2 - same as IN1, but controls the second relay on the board
GND - ground
A few random notes:
- I really appreciate the indicator lights on this board! (power, relay1 on/off, relay2 on/off)
- this relay is mechanical and makes a very audible CLACK when it switches state. Keep that in mind depending on your application!
- I unsoldered the connection pins and replaced them with wires - if you don't want to do that you'll need some sort of coupler. I'm new to hobby electronics so I'm probably missing some terminology .. essentially the connections to control this relay are in the form of pins (male) on this board, while it has screw-in terminals for the high voltage input/outputs. I unsoldered the pins from this board and replaced with wires, and it works fine.
This was a pain, so had I known I needed to do this before this arrived, I would have looked for a female/female coupler (again, sorry if I'm missing the right terminology)
| Connector Type | / |
|---|---|
| Contact Material | / |
| Contact Type | / |
| Current Rating | 10 Amps |
| Mounting Type | / |
| Brand | SainSmart |
| Operation Mode | Automatic |
| Coil Voltage | 5 Volts |
| Contact Current Rating | 10 Amps |
| Maximum Switching Current | 10 Amps |
| Minimum Switching Voltage | 5 Volts |
| Number of Terminals | 3 |
| Specification Met | / |
| UPC | 065973900658 885970089893 885776099362 |
| Global Trade Identification Number | 06952131721306, 00065973900658 |
| Item model number | 101-70-100 |
| Item Weight | 1.06 ounces |
| Product Dimensions | 4.79 x 0.69 x 0.1 inches |
| Item Dimensions LxWxH | 4.79 x 0.69 x 0.1 inches |
| Manufacturer | SainStore Inc. |
| ASIN | B0057OC6D8 |
| Is Discontinued By Manufacturer | No |
| Date First Available | June 23, 2011 |
