Iot Relay - Enclosed High-power Power Relay for Arduino, Raspberry Pi, PIC or Wifi, Relay Shield
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The IoT Relay
Most helpful customer reviews
21 of 21 people found the following review helpful.
Excellent High-power Relay
Well made device with robust relay and sturdy casing. HINT: if you plan to mod this thing, there are 4 little screws hidden by the stick-on rubber feet in addition to the 2 visible screws at the top. The copper trace connecting the relay to the plugs is double sided (meaning you have to cut Both the top and bottom traces in order to completely disrupt the path).
I bought this High-power relay to replace a malfunctioning "smart" power strip for home theater application; the smart strip senses the increased current drawn by the receiver and switch on the power for the subwoofer/Bluray player/CD player, etc... to prevent leaving those accessories on all the time. Well, the smart strip worked OK for a year & half then no longer switch on. I didn't feel like spending another $28 or so for a similar design smart strip that might die on me again so I want to try this one.
I will use the 5V DC from the receiver's USB port to trigger this relay on thus powering all the accessories. To connect and control this relay I chopped off the end of a micro USB phone charger cable then connect the Red and Black wires to the relay's green connector - the USB end would plug into the receiver's USB port which energizes when the receiver is turned on.
Let's see if this thing lasts longer than 1.5 years.
36 of 36 people found the following review helpful.
Extremely well made, solid, and totally hackable
By Christopher T. Dahle
Added February 29, I made the modifications noted below and also added one of these AC Power Cord 5-15P to C13 - 8 Foot, Orange, 15A/250V, 14/3 AWG - Iron Box Part # IBX-2824-08 in bright orange, to create a heavy duty, breaker protected, relay controlled power supply for my X-Carve CNC. I modified the relay so that the "Normally On" receptacles are now "Always ON" but protected by the main power switch. The always on outlets power the stepper motor driver and an articulated work lamp over the machine. The switched outlets control the spindle and turn on the vacuum connected to the dust boot. I continue to be very happy with this quality product.
Like others here, after buying the IoT relay and being completely happy with it, I decided that while the pair of relay controlled "Normally off" receptacles did exactly what I wanted, I did not want relay controlled "normally on" receptacles, I wanted "Always On" receptacles protected by the surge protector and controlled by the Off/Reset switch, but isolated from the relay and the signal.
So, although I had been perfectly happy with the relay the way it came from the manufacturer, once I read a couple of the review here, I convinced myself that I just had to have some "always on" outlets, and yes, I could get this by just plugging the IoT Relay into a power strip, but I want a clean installation so I decided, about an hour ago, to hack it.
This device is VERY well made. It has a robust circuit board, solid components, and it is laid out and assembled so cleanly and logically, that it is almost trivial to hack it. You have several options:
1) You can alter it so that all four outlets give the same behavior, controlled by the state of the relay. This requires you to cut a circuit board trace to isolate the receptacle you plan to alter from the relay, then solder in a jumper to connect the hot sides of that receptacle to the hot side of the other receptacle. If you have made Arduino or RaspberryPi circuits of your own design and own a soldering iron, doing this hack will be completely trivial for you, you will open up the case, break out the Dremel tool, soldering iron and a piece of #14 wire, see EXACTLY what you need to do, and be done with the job just as soon as your soldering iron is hot enough. If you can't open the case and almost immediately grok the simplicity of this hack, you should button up the case, stop reading, and wait for the next version of this IoT relay.
2) You can also change either set of outlets to be always on, regardless of the switch position or the state of the relay. This bypasses the surge protector and circuit breaker and is probably a BAD IDEA so you are on your own, I'm not going to tell you how to do this.
3) You can wire either pair of outlets so that they are always on but controlled by the switch and protected by the surge protector and circuit breaker. This is probably the easiest option and the most desirable one. You simply solder a jumper wire from the common hot to the normally closed side of the relay and that's it.
Once you open the case, you should easily be able to see the wiring traces that go to the neutral sides of both outlets. All the neutrals are bound together, and they all go back to the neutral side of the power input receptacle. You don't touch any of these and you don't mess with the ground either. The alterations will all be made to the hot side, so follow the hot side of the power input and see how it leads to the circuit breaker and surge protector components and to the common side of the relay. Then separate, hot traces go from NC and NO sides of the relay to their respective outlets. This board is so cleanly and logically laid out, that if you can't look at it and almost immediately see how it works, button the whole thing up exactly the way it was before you opened it because you are not yet ready to be playing with AC.
I'm serious here, home gamers, if the hack is not completely obvious to you on first glance, then you really need to brush up on some theory, and practice on some low voltage circuits first.
2 of 2 people found the following review helpful.
A great gadget. I use it as an upgraded version of the "Power Minder" USB power switch. I have wired the trigger input to a spare USB port on my PC. When I turn my PC OFF, all the associated peripherals turn OFF at the same time. AND, the plant light next to my PC turns ON. The trigger input is AC/DC and completely isolated from the mains. The quality and usefulness of this makes it a great value at four times the price. If you are into convenience tech gadgets, this is one for the "must have" column. I have five of these mounted to DIN rails for many other tasks.