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Best Electromechanical Products

Sensi Smart Thermostat, Wi-Fi, UP500W, Works with Amazon Alexa
Designed to work with the wires you already have, Sensi thermostat does not require a common wire (c-wire) in many cases, so it is compatible with most heating and cooling systems* (U.S. and Canada only). Set your Sensi thermostat to automatically adjust your homes temperature for location-based temperature control with geofencing, or quickly create a 7-day schedule to reduce wasteful heating and cooling when no one is home. Integrates with Amazon Alexa for voice control and Wink smart home platforms, and works with Google Assistant and Google Home using the free Wink app.
Reviews
"In my research I learned that my primary complaint the Nest - that the temperature swing was too wide - was addressed by Sensi's "cycle rate" setting. Nest's no-button design is cool, but using a thermostat is not a lecture in UX minimalism, and black-and-chrome doesn't really disappear into the background of my home (white trim and all). Granted, we didn't also install a second Nest to have more temperature sensors, and we didn't buy their $200 talking smoke detectors which also report environmental statistics back to the thermostat. Most people won't care about this but being a network security engineer, I'm impressed that the thermostat has exactly 0 open TCP ports, outbound communication is with one IP, and total traffic is very modest."
"--. I had been wanting to get a WiFi Thermostat for a long time now, but I held off because I was worried that I would buy one that wouldn't be compatible with my home or that I wouldn't be able to figure out how to install it. You select the wires that your current thermostat has, and then the app tells you what to label them and where they will go in the new thermostat. I had never replaced a thermostat before, and it took me under 30 minutes (which includes unboxing, looking for screwdriver, looking for AC unit shut off switch, watching how-to videos included with the app, etc). The app is handy because it also tells you your local Hi and Low temps from the forecast as well as the humidity in your home, upcoming schedule, set temp, actual temp, and the background is either blue, red, or grey depending on if your system is on Cool, Heat, or off at the moment. The only thing this is missing is a few more advanced options for the app, such as specific alerts (like if the temperature is changed manually, I would like to be able to get an instant alert on my phone) and an air filter change reminder that can be set for a certain amount of time (like 1, 2, or 3 months)."
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TP-Link Smart Plug Mini (2-Pack), No Hub Required, Wi-Fi, Works with Alexa and Google Assistant, Control your Devices from Anywhere, Occupies Only One Socket (HS105 KIT)
Turn devices on and off, create schedules and set timers using the Kasa app. Remote access: control devices connected to the smart plug wherever you have internet using the free kasa app on your smartphone.
Reviews
"They are somewhat bulky, and at $20/device, a little expensive (Amazon does occasionally put them on sale at a steeper discount) , but it was great to finally find something to control lights in my house that works over the network and is easy to set up."
"It brodcasts a wireless network, which you then have to join and then put in your information for your wireless network."
"It has a cool online feature that allows randomized usage during a travel mode that you configure."
"These are great smart plugs and I highly recommend."
"Our Alexa is right by the front door and when entering late at night we. can just tell Alexa to turn on the lights and our path is lit all the way upstairs."
"I rebooted the router and the plug joined the network without a fuss."
"Initially set up easy & worked fantastic with alex."
"After several hours of trying to connect to Alexa app, I gave up."
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TP-Link HS100 Smart Plug (2-Pack), No Hub Required, Wi-Fi, Works with Alexa and Google Assistant, Control Your Devices from anywhere (HS100 KIT)
You can also set customized rules to turn lights on or off as scheduled. Easy to use and install - Just plug a device into the Smart Plug and connect to your Wi-Fi network.
Reviews
"They are somewhat bulky, and at $20/device, a little expensive (Amazon does occasionally put them on sale at a steeper discount) , but it was great to finally find something to control lights in my house that works over the network and is easy to set up."
"It brodcasts a wireless network, which you then have to join and then put in your information for your wireless network."
"It has a cool online feature that allows randomized usage during a travel mode that you configure."
"These are great smart plugs and I highly recommend."
"Our Alexa is right by the front door and when entering late at night we. can just tell Alexa to turn on the lights and our path is lit all the way upstairs."
"I rebooted the router and the plug joined the network without a fuss."
"Initially set up easy & worked fantastic with alex."
"After several hours of trying to connect to Alexa app, I gave up."
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Best Electromechanical Controllers

Sensi Smart Thermostat, Wi-Fi, UP500W, Works with Amazon Alexa
Designed to work with the wires you already have, Sensi thermostat does not require a common wire (c-wire) in many cases, so it is compatible with most heating and cooling systems* (U.S. and Canada only). Set your Sensi thermostat to automatically adjust your homes temperature for location-based temperature control with geofencing, or quickly create a 7-day schedule to reduce wasteful heating and cooling when no one is home. Integrates with Amazon Alexa for voice control and Wink smart home platforms, and works with Google Assistant and Google Home using the free Wink app.
Reviews
"In my research I learned that my primary complaint the Nest - that the temperature swing was too wide - was addressed by Sensi's "cycle rate" setting. Nest's no-button design is cool, but using a thermostat is not a lecture in UX minimalism, and black-and-chrome doesn't really disappear into the background of my home (white trim and all). Granted, we didn't also install a second Nest to have more temperature sensors, and we didn't buy their $200 talking smoke detectors which also report environmental statistics back to the thermostat. Most people won't care about this but being a network security engineer, I'm impressed that the thermostat has exactly 0 open TCP ports, outbound communication is with one IP, and total traffic is very modest."
"--. I had been wanting to get a WiFi Thermostat for a long time now, but I held off because I was worried that I would buy one that wouldn't be compatible with my home or that I wouldn't be able to figure out how to install it. You select the wires that your current thermostat has, and then the app tells you what to label them and where they will go in the new thermostat. I had never replaced a thermostat before, and it took me under 30 minutes (which includes unboxing, looking for screwdriver, looking for AC unit shut off switch, watching how-to videos included with the app, etc). The app is handy because it also tells you your local Hi and Low temps from the forecast as well as the humidity in your home, upcoming schedule, set temp, actual temp, and the background is either blue, red, or grey depending on if your system is on Cool, Heat, or off at the moment. The only thing this is missing is a few more advanced options for the app, such as specific alerts (like if the temperature is changed manually, I would like to be able to get an instant alert on my phone) and an air filter change reminder that can be set for a certain amount of time (like 1, 2, or 3 months)."
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Best IO Modules

Electronics-Salon DIN Rail Mount Screw Terminal Block Adapter Module, For Arduino MEGA-2560 R3.
DIN Rail Mount Screw Terminal Block Adapter Module, For Arduino MEGA-2560 R3.
Reviews
"This is a great way to clean up testing and development using the Arduino controller."
"Product meets my expectation."
"Super easy to use."
"great item."
"Very cool!"
"Overall this is a fantastic option for mounting an Arduino Mega board to a DIN rail."
"excellent board for mounting an Arduino Mega to Din Rail."
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Best Indicator Lights

PACK OF 10 YuCo YC-9WRT-23R-120-10 RED LED 9MM MINIATURE INDICATOR PILOT LIGHT 120V AC/DC
Color: RED. Enter your model number to make sure this fits.
Reviews
"I installed them across my light switches, so they'd come on when the switch was off."
"These were the cheapest I could find on amazon and they work great so far."
"There are excellent LEDs for 120VAC, I have purchased an number of colors and all work very well."
"reasonably bight with nice, long leads."
"good working for 120V AC."
"very good product and service, thanks."
"The so called "green" color of these 9 MM LED 110 volt lights is a real misnomer."
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Best Electronic Component Motors

Enerlites HET06A 1-5-10-15-20-30 Minutes Preset In-Wall Countdown Timer Switch, w Decorator Wall Plate, White
The wall switch timer is ideal to control ventilation fan, ceiling fan and light in bathroom and laundry room where light and fan could be left on for a long time. This fan timer switch works with any household ventilation Fans including Panasonic whisper ceiling bathroom fans, ceiling mounted fans and bathroom vent fan with light. Bathroom exhaust fan and light control: HET06A+TDOS5 Sensor Switch For bathroom, multi-gang HET06A timer fan control with a motion sensor as light controller fits in any standard wall box and can be multi-ganged with other devices. Automate the shut off operations of all types of lights including LEDs, CFLs, fans and heaters at the time pre-set.
Reviews
"I like the version that illuminates the last selected time's LED, and the LED under the power on/off button, when the light (load) turns off. Some of the reviews here talk about the night light feature, so I assumed that would be the version I would receive when ordering from this seller, but that was not the case."
"It's pretty bright but perfect for that middle of the night pitstop without totally shocking your eyes and taking forever to get back to sleep."
"For whatever reason (possibly the clothes in the closet were too close to the switch) it would just keep the switch on longer than programed."
"You can click the individual presets to turn on the fan or you can click the big button at the bottom and it selects whatever preset was used last."
"This is so perfect for just leaving the fan on for a while."
"Used to control the bathroom fan to ensure the moist air continues to be removed for 30 minutes after the shower."
"I push the "ON" button when I get in the shower and push the "20 min" timer button when I get out, fully exhausting the moist air not just from the bathroom but also from the ductwork so that no condensate drips back into the fan."
"The main difference between this model and others I have, is this one leaves the little blue LED indicator lights on all the time. The light is actually just bright enough that we don't even turn on the light in our small powder room in the middle of the night."
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Best Switches

TP-Link Smart Plug Mini (2-Pack), No Hub Required, Wi-Fi, Works with Alexa and Google Assistant, Control your Devices from Anywhere, Occupies Only One Socket (HS105 KIT)
Turn devices on and off, create schedules and set timers using the Kasa app. Remote access: control devices connected to the smart plug wherever you have internet using the free kasa app on your smartphone.
Reviews
"They are somewhat bulky, and at $20/device, a little expensive (Amazon does occasionally put them on sale at a steeper discount) , but it was great to finally find something to control lights in my house that works over the network and is easy to set up."
"It brodcasts a wireless network, which you then have to join and then put in your information for your wireless network."
"It has a cool online feature that allows randomized usage during a travel mode that you configure."
"These are great smart plugs and I highly recommend."
"Our Alexa is right by the front door and when entering late at night we. can just tell Alexa to turn on the lights and our path is lit all the way upstairs."
"I rebooted the router and the plug joined the network without a fuss."
"Initially set up easy & worked fantastic with alex."
"After several hours of trying to connect to Alexa app, I gave up."
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Best Microphone Elements


Best Motion Actuated Switches

ICM Controls ICM282A OEM Replacement, Carrier HK42FZ-Series for 325878-751
ICM282A Furnace Control - with software for enhanced controls operation in counter flow and down flow furnace applications.
Reviews
"This board worked great for my old Bryant furnace."
"Static awareness needed so discharge you hands on the grounded metal furnace when mounting the board."
"Testing the unit with a jumper cable was a little more complicated. I did not understand that you power up the unit and briefly touch the cable to the two appropriate connections to get it to enter into the testing sequence."
"More ICM282 furnace controller board positive attributes. 1) Arrived on time. 2) Clear Instructions printed inside the box. 3) Made in USA by a USA-based company. 4) US-based support, which I did not need."
"Installation said to disconnect all Thermostat wires for self test ."
"Control board was a great drop in replacement for my failed Bryant board."
"This board has a maximum fan run setting of up to 180 seconds."
"I've found other reviews on various forums online that tell similar stories of early failure and poor construction."
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Best Motor Contactors

Trombetta 12 Volt Bear DC Contactor Part No. 114-1211-020
MurCal is an Authorized Distributor of Trombetta products.
Reviews
"Great product at a great price!"
"All batteries charging on RV again."
"Needed this for my motor home, it's the upgrade with silver contacts and will last longer than the one with copper contacts, local dealer wanted $75.00."
"I replaced the old trombetta that had copper contacts with this one with silver contacts."
"Perfect for our RV."
"worked great and a great price!"
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Best Motor Drives

LAPOND VFD Drive VFD Inverter Professional Variable Frequency Drive 2.2KW 3HP 220V 10A for Spindle Motor Speed Control (VFD-2.2KW)
Feature 1.PID control;advanced calculus PID closed-loop arithmetic, quick responding speed and high suitability. 2.In extremely high speed working environment, ordinary bearing can not ensure this high rotate speed for using for long time. 3.Various control technique by both synchronization and non-synchronization, dynamically realize fast starting without changing brakes. 4.With extremely strong anti-jamming capability. 5.Low output ratting torque, low speed running ability. 6.Easy PLC function can realize 16 legs of speed and inverter control function. 7.Auto voltage regulation (AVR) technique, for ensuring the inverter load capability. 8.Broad voltage working area. 9.ISO9001 quality certifications which means this item is the top quality item. IMPORTANT NOTE: The VFD has not internal braking control unit , not suitable for high inertia loading; Fan runs all the time even though the motor isn't.
Reviews
"Unit arrived on time and as described."
"This is a great VFD for the money."
"The work of the regulator is accompanied by an additional sound of a very high frequency from which the head gradually begins to ache!"
"Has only been in service a short time, if it remains reliable I will purchase another and give it 7 stars."
"I was skeptical but it works great on my Bridgeport, easy to install, fantastic."
"works great on my bridgeport milling machine 1 phase to 3 phase made easy."
"Took me a few minutes to hook up and get my mill running."
"Works great, go with this one over those cheap eBay ones."
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Best Motor Starters

Siemens 14DUD32AA Heavy Duty Motor Starter, Solid State Overload, Auto/Manual Reset, Open Type, Standard Width Enclosure, 3 Phase, 3 Pole, 1 NEMA Size, 5.5-22A Amp Range, A1 Frame Size, 110-120/220-240 at 60Hz Coil Voltage
All Siemens Heavy Duty controls, including our popular Half Sizes comply with applicable NEMA and UL tests.. All starters are supplied with a NO holding interlock that in conjunction with an appropriate pilot device will provide low voltage protection or release.. NEMA starters are ideal for applications requiring dependability and durability. The resulting self-cleaning and reduced contact bounce mean cooler operation and longer life for the large silver cadmium oxide contacts.. Control terminals are self-rising pressure type.. They are designed to operate on either 50 or 60 Hertz.. Thermoset materials resist arc tracking and the stresses of heat and severe impact.. All starters can be modified in the field with a complete range of accessories.
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Best Electrical Relays

SainSmart 8-Channel 5V Solid State Relay Module Board for Arduino Uno Duemilanove MEGA2560 MEGA1280 ARM DSP PIC
Specifications SSR Output (each channel) Load voltage range: 75 to 264VAC (50/60Hz). Input control signal voltage: 0V - 0. Manufacturer: OMRON Part number: G3MB-202P, 5V version. Input control signal voltage: 0V - 0.5V Low stage (SSR is OFF), 0.5V - 2.5V (unknown state), 2.5V - 20V High state (SSR is ON); SSR Output (each channel); Load voltage range: 75 to 264VAC (50/60Hz); Load current: 0.1 to 2 AMP.
Reviews
"The only complaint I had, was the terminals for the high voltage are not soldered on straight and move quite a bit."
"A great addition to the Christmas Light control system!"
"Got this to control my Christmas lights."
"Has been working solid (pun) for quite a while now and no failures."
"When I saw this board for the price, I ordered one to test out with my Arduino Mega board and it took all of 10 minutes to get it hooked up and working like a champ."
"So nothing else mentions it absolutely positively, and I was a bit worried, because the RPi uses a +3V output, instead of the standard +5V. The pins are pretty much laid out like an electrical switch on the wall."
"I used this with a Raspberry Pi to build a touchscreen operated, Wi-Fi connected, garage door control unit and freezer monitor with an custom-made iPhone app."
"First one arrived defective."
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Best Solenoids

Central Boiler Outdoor Wood Furnace Solenoid
Solenoid has a 1-3/8" center-to-center bracket hole (for models after June 2000, including all E-Classic models). Constructed of durable laminated steel with corrosion-resistant frame and plunger.
Reviews
"My boiler was turning into a steam engine every couple of days, with the last event boiling off 5 inches of water in the middle of the night."
"Replaced my outdoor wood furnace damper door with this and it has been working well now for three months happy with my purchase and the price."
"Perfect fit on my 2011 CL6048 central boiler."
"Works on the Hardy wood stove perfectly."
"Looked just like the one I needed, but has too lite duty for my wood stove."
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Best Tower Stack Lights

Signaworks 3 Stack LED Andon Tower Light, Off-Steady, Red/Amber/Green, 8 ft Power Cord, Plug & Play Ready
The LED 3 Light Andon Tower Light Station, has a 2 position industrial selector switch to turn each light section to On & Off. Signaworks continues to be the leader in Industrial Andon Lights since introducing the first industrial rated product over 20 years ago. The LED Andon Light is easy to mount and is Highly Visible for any Industrial Plant Floor application for Signaling Quality, Engineering, Maintenance, Material Supply or Employee Break in a Manufacturing Cell.
Reviews
"It is compact but very visible for the speaker to see and easy for the timer to use."
"Our first official Andon tower - we are very pleased with it. Update - We got another one."
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