NOYITO 8-Channel 12V Computer USB Control Switch Relay Module Drive-Free Relay Module Plug and Play Suitable for PC Smart Controller

The relays were arcing and getting stuck in closed position on a 3 amp 110 Vac load, which baseed on specifications of the seller, this device should be good up to 10 amps. The seller quickly sent a replacement (received within 3 days of notifying of the problem) and problem solved! Wish the original product worked, but I can say that if you have problems and need to contact the seller, their service is very quick.

This appears to be remarketed from SainSmart. The SainSmart website claims it has an FTDI FT245L USB chip in it. As seen in the attached photo, it does not. Instead, it is an Atmel ATMega8. With the FTDI virtual com port (VCP) driver installed on my Windows 11 PC, this does not appear as a COM port. One new device appears as "HID-compliant vendor-defined device". But there is no documentation, not in English, not in Chinese, not from Noyito, not from SainSmart, not from anybody. And FTDI's documentation is obviously not relevant. I did find a website that listed Noyito as a registered trademark of Changzhou Xuchuang Information Technology Co., Ltd.. But they don't seem to have a website. So this appears to be $20 of landfill. It seems that Acroname makes a similar board for twice the price that comes with documents to make it usable.

Here is some quick java code that worked. Dont judge the code quality as its just thrown together to work as an example. Requires NO external libraries. private static void relayOn(boolean on, int idx) throws Exception { ClassPathLibraryLoader.loadNativeHIDLibrary(); HIDDeviceInfo[] hids = HIDManager.getInstance().listDevices(); HIDDeviceInfo relayInfo=null; for ( HIDDeviceInfo dev : hids ) { //System.out.println(dev.toString()); //System.out.println(dev.getProduct_string()); if ( "USBRelay4".equals(dev.getProduct_string()) ) { relayInfo = dev; } } HIDDevice relay = HIDManager.getInstance().openByPath(relayInfo.getPath()); //relay.getFeatureReport(new byte[] {0x0,0x0}); byte[] send = new byte[9]; send[0]=0x0; //Report ID if (idx<=0) { if ( on ) { send[1]=(byte) 0xfe; } else { send[1]=(byte) 0xfc; } } else { if ( on ) { send[1]=(byte) 0xff; send[2]=(byte) idx; } else { send[1]=(byte) 0xfd; send[2]=(byte) idx; } } relay.sendFeatureReport(send); relay.close(); }

It's not working on my WIN10 at the beginning, because WIN10 recognized it as DigiUSB for some reason. After deleted wrong driver and let WIN10 install again it works like a charm.

NC configuration was giving me some unexpected voltages on the 4 channel version. With power to the box OFF, USB connected to a powered ON laptop, I was measuring 4.3 volts at the output terminals. No idea why. The only source for the power at this point is the USB/Laptop Makes me wonder that when 12v power is ON to the box, if it is being applied to the USB cable? This crossover/talk condition has me concerned. Probably not a good idea to leave high-end electronics in a powered, under-voltage state, nor having 12v on the USB cable if this is indeed the case. NO configuration has not displayed any unexpected voltages. Will not be using this to power my gear yet. Need to do more testing. Will not be connecting USB to my laptop until I confirm 12 volts are not on the cable. SELLER: Please explain why USB power is crossing over to the NC-COMMON terminals. I also have a schottky diode between the board's +12V terminal and the +12V bus, which also powers the NC-COMMON terminal. Another forum member said he did not see this behavior in the 8 channel version. The unit functions well except for this. I have a second unit arriving Sunday so this might fix the issue if it is a bad board. Block diagram of my wiring attached. Will update this post. UPDATE: Second unit still showing 4.3V at 12V terminals with just USB connected

Works as it should and the seller was very responsive to questions.

Worthless. Windows 11 does not recognize the device.

Connected this product to HP Elitebook notebook running latest Windows 10 X64 operating system. Ran the recommended by seller software GuiApp_English.exe tool. It does not see connected USB relay board at all. Yet Windows device manager sees USB relay board as "USB Input Device" 0x16C0 0x05DF. Tried all USB ports on this notebook, same result. Useless purchase? The USB relay board has a microcontroller Tiny45 on it. My guess is that the firmware in microcontroller is defective or incompatible with Windows 10 X64. Doubt that microcontroller firmware can be updated remotely. Unless seller addresses the problem will return the product. Upgraded to 2 star after spending a lot of time troubleshooting this product issues. For those who are engineers - read on. 1. This is HID class device, no serial port is involved. Some legacy software may be confused 2. Apparently this product has USB issues when another USB device is connected to the same USB Hub. For example, when a USB camera is connected then either camera will work and USB relay won't, or the camera won't work and USB relay will work.

It worked for 4 days and then nothing.