R**R
Exactly as advertised (rotate the image that I have attached to the review)
I purchased this board because it advertised a timer function (which I needed for my application), but was uncertain how this would work from a Smartphone app. I should not have been concerned. This board uses the eWelink app, which also is used by Sonoff devices -- and it may have been manufactured in the same Chinese factory as Sonoff. Regardless, this makes it easy to configure and to integrate with Amazon Alexa should that be needed.Here are the features the board offers: Relay output contacts (N/O and N/C) rated at 10A AC/DC. Powered from a 12VDC supply (not included).How to use:1- Apply power to the board. Open the eWelink app on your smartphone.2- Press the pushbutton on the board and hold until the LED flashes more rapidly than seen on power up.3- Discover the new board using the Add Device funtion in the eWelink app.4- After the board has been discovered, name it and then download any available firmware updates (device setup in the eWelink app ... on the upper right).I wanted to suplement my 40 year old garage door opener. The remote controls for these are no longer available, but this board makes your smart phone into a remote garage door opener. Here are the steps that I used, but your actual needs may differ.1- The garage door opener head (motor/operator) connects to the remote control box with two thin wires. These wired do two things. First, the furnish (about) 28VAC to the remote control box to provide power. They also function as a signal to the opener head to turn on the motor to open or close the door. This is done by connecting the two signal/power wires together using a relay. By design, this relay is inside the remote control box. However, if we connect the N/O (normally open) relay contacts of this board to those same two wires we duplicate this function without impairing the normal opeation of the remote control box.2- To make this work correctly, we must use the Timer function in the eWelink application. Select Timer and choose a timer interval of 1-second. Leave the other settings the same.Now, the timer module acts as a remote control for the garage door. Some care should be employed. The actual security of this system relies upon the WiFi security you have in place in the location where you use the device. Make sure that you are using good WiFi security practices. Also, this allows you to open or close the door from your smart phone, even when you are in a different location or even out of the country. This may be good... But make sure that you are not "butt dialing" your garage door.ADDENDUM (7/21/2019):I have written my interpretation of the installation and operation of this module. The User Manual that may be downloaded using the QR Code may be a little confusing.Note: “APP” in these instructions means the eWeLink app that you have downloaded and installed using the instructions provided with the relay unit. The eWeLink app is available through the AppStore or GooglePlay.Product Operation“eWeLink” APP installation and WiFi paring• Download the “eWeLink” APP. Install it and register as a user in opening dialog of the "eWeLink" APP.• Select the appropriate language natural language (e.g. English).• Connect a 12V DC power supply to the terminals marked ‘12V’ and ‘GND’. (Note: Do not connect to the load until you have configured and tested the board). The DC power supply voltage may range from 9VDC to 15VDC, though 12VDC is recommended. I have used a 9VDC and 12VDC power supply with no problem.• Make sure module within the range of WIFI network with which it will be used. Connect your phone to the same WiFi network (2.4GHz only)• Continue with the "eWeLink" APP. Press the configuration button (labeled “Key” on the silkscreen) on the module for more than 6 seconds. When the LED starts to flash quickly (3 quick pulses, pause, repeat), select "Add Device" (the “+” symbol near the bottom of the “eWeLink” APP).• Choose “Quick Pairing” from the menu. Input WIFI name and WiFi password for the network that will be used by the module. Wait until the pairing step has finished. This can take a few minutes, though in my experience it pairs within about 60 seconds.• After satisfactory pairing edit the device name to one that is appropriate for your use.• If the pairing fails repeat the appropriate steps above• Test and configure module. Download any firmware update that may be needed.Using the module• Make sure the module has paired successfully.• Make sure module in the range of WIFI to be used.• Make sure phone has a connection to the internet using WIFI or a cellular data connection.• Connect a load at output terminals and power supply to the load. You may use either the normally open or normally closed load connections as may be needed in your application.• Connect the module power supply.• Set the work mode as described the in the next section.Work Modes:The relay module can operate in either self-locking mode or inching mode. The default mode is self-locking.Users can set up the work mode through the APP "eWeLink". The firmware of the module needs to be updated to version 2.6.1 or higher (my module was updated top firmware version 3.3.0 from the eWeLink “Setting/Firmware” menu).To change operating modes from “latching” to “inching” (“inching” means that the relay pulses on for 0.5 seconds or longer then it returns to the off state), use the “eWeLink” APP “Setting/Inching” slider switch to turn momentary operation on or off. You can use the “Settings/In set the interval that is used to pulse the relay on.• When in Self-locking Mode: Press the button on "eWeLink" APP, the relay switch module will activate the relay and it will latch in the on mode. Press the button again and the relay switch module will turn off. The “eWeLink” APP shows the relay state, “ON or OFF.”• When in Inching Mode: Press the button on "eWeLink" APP, relay switch module will toggle on for 0. 5s (or another interval you specify) and then off automatically. Note: The relay switch module can be configured to switch either “latching” or “inching” as outlined above.Use with Amazon Alexa (Echo) devices• Open the Alexa app on your phone.• Make sure to add eWelink skill is enabled in the Alexa app.• Choose Add Device from the configuration menu in the upper left corner of the Alexa app.• Select Switch.• Choose eWeLink.• Select “Discover Devices.” Alexa may add your new module automatically, so this step may not be needed (I did not have to do it).• Use your new module by its assigned name.
E**S
So far, not the slightest "issue" (no problems)
The media could not be loaded. WHDTS moduleSUMMARY 1st: This module installed and operated perfectly. The module did "exactly" what it's intended to do and did so reliably.Review of the WHDTS "1/2 second momentary closure" module (inching module/fixed timer)Let me start off by hopefully clarifying something about the listing on AMAZON:you, the buyer, purchase these modules based on your intended useif you look at this listing, (https://www.amazon.com/gp/product/B071GCDGQB/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1 ) the seller is grouping an assortment of modules types in one listing.a listing that mentions an "inching relay module," and you have a module that operates a relay for a specific interval of time, then returns to it's original "state or status" (ex: O H garage door button for instance)"self-locking" relay holds it's state or status (once it's initially activated) until a 2nd or "off" command is issued (ex: shop fan or lights for instance where you want to keep a device or appliance "ON" (or off) for an unknown or variable timed intervalThere just seems to be an enormous amount of confusion and questions about these modules, where users may have purchased the wrong module for the intended use.OK, on to the module review:This module: (.5 second momentary relay operation thru WiFi or preset "timed event" activation)this module depends on eWeLink app software (IOS and Android) "install this software first)I won't rehash the setup instructions, I'll simply say the instructions are "adequate" and work. There are many sites that tell you the same thing over and over. It's really that simple. Just follow the written instructions to the letter.Once connected to your WiFi network, (thru the app) it flawlessly connected to ALEXA. I don't use GOOGLE HOME, but I can't image an issue there. My home is filled with ALEXA "stuff" :)In my case, I just say "ALEXA, turn on the wifi module" I then get a .5 second relay operationAt that point the module is done. It has done all this module does. No other options or adjustments. When instructed, it closes a relay for 500ms or 1/2 second and then releases (perfect garage door opener button)The unit comes with a SPDT relay NC/Common/NO "single pole contacts" (SPDT=(S)ingle (P)ole (D)ouble (T)hrow) "a single moving arm connecting to one of two contacts called NC and NO (but never at the same time - always one or the other) (yes, I know there's the briefest of intervals between states while switching)at rest (no command or between operations) the "common terminal and the NC terminal are closed (common and NO are "open")on activation, the relay operates (closes the other way) and common and NO terminals close for .5 of a second (1/2 second) (use this connection for a garage opener)I did a series of "limited" RF exposure" tests (2 meters and down) and had no false operations of the module. I will do more frequencies later, but I had the transmitting antenna in very close proximity to the WiFi antenna and the unit still operated. note: the highest frequency I tested was 144 Mhz. This module operates at 2.4 GhzI'll add that there are three types of timers available to program timed activation's - This brings me to my only minor complaint. "It's easy to create a timed event "inadvertently" in the eWinkLink APP." Just be sure that when you go in to any of the 3 timer areas, (Schedule, Timer, or Loop Timer) that you don't accidentally save them. The app automatically creates a basic timer as soon as you enter each of those areas. Just cancel out so a timer in NOT created unless you really meant to create a timer.This module gives you a 1/2 second switch closure or opening, and, you are able to program timed activation's (that's pretty much "it") For the price though, it's almost hard to believe you can get these kinds of features, (WiFi, Alexa and Google interface, Timers, Event History, 10 amp "on-board" relay) REALLY Amazing!Note: I included a video but I'm unable to upload it. I'll have to try to reduce the size of the video at some point and I'll then add it to this review
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