Granted that a robot vacuum won't replace a full power vacuum cleaner but, it will darn help you have constant clean carpets and reduce the daily cleaning task of having to vacuum pet hairs and litter grit!
Robot sweepers such as the Eufy RoboVac 30C are equipped with the necessary tools for the job. These include sensors and threaded tires to maneuver around obstacles, over thresholds and under sofas. RoboVac 30C does require a 73mm height clearance.
From tile to hardwood to carpet, the Eufy RoboVac 30C can handle all surfaces, thanks to a built-in rolling brush and squeegee blade capable of sweeping up trodden down hair and dusty dirt. Like most robot vacuums, RoboVac 30C can only work on hard floors to medium size carpets. If you have a carpet with long strands, the RoboVac 30C will run into trouble because the strands will get wound up in the spinning brush and/or the robot will get stuck.
Luckily, you can prevent these type of issues by using the included "boundary strip" and stop RoboVac 30C from going onto a long haired rug on a carpet, or area of the house you don't want it to sweep.
Looks-wise, RoboVac 30C looks identical to other Eufy RoboVac models, including RoboVac 15C Max and RoboVac G10 Hybrid. The key difference lies"under the hood", more specifically in the filter suction system.
Instead of, using a unibody washable filter, like found in many Eufy RoboVac models. RoboVac 30C uses a three-piece filter system that consists of a pre-filter, foam filter and high-performance filter.
This three-piece filter arrangement is not as convenient as a single washable filter but, it does a better job of collecting dirt and fine hair. You can still wash the foam and pre-filter but not the high-performance filter, which seems to be made of a paper-like fabric material.
RoboVac 30C doesn't have a navigation system (i.e. gyro, lidar) built-in like the G10 Hybrid model has. This means RoboVac 30C cleans around the room randomly since it's not able to accurately map out the room. RoboVac 30C won't know when the room is cleaned so, it will clean until the battery gets low and/or until it completes your cleaning schedule.
While the cleaning pattern is random, RoboVac 30C does know how to return to the charging dock for charging, which it will do before running out of battery.
RoboVac 30C has a user replaceable battery pack that consists of a 2600mAh 14.4V Li-ion battery. Being able to replace the battery is handy as it allows you to keep the Eufy RoboVac good as new. Li-on batteries don't last forever so, eventually you will have to replace them as they will not hold charge properly.
You can tell when the battery has gone bad when performance drops and/or the battery doesn't hold charge for long. Usually, you will hear multiple beeps and a flashing red light during charging. Replacing the battery is very simple. Unscrew the battery cover, lift up the battery, remove the single connector and, hey presto, insert the new battery. Battery replacements are available from Eufy.
The front caster wheel can also be removed with the use of a screwdriver, while the wheels have a spring-loaded suspension mechanism to allow a smooth transition between thresholds. RoboVac 30C can be controlled two ways via the Eufy Home mobile app and/or a physical remote control.
The Eufy Home app allows you to change settings and control the robot nearby or when you're not at home. If you're at work, you will be able to choose a mode (quick, edge, auto or spot clean) and start a cleaning session via the app. If the robot gets stuck or tips upside down, you will receive a message alert to let you know.
The Eufy Home app can only connect to 2.4Ghz networks and needs a transmission speed above 11Mbps in order to operate effectively. 802.11g and 802.11n networks are suitable/recommended, although it's worth knowing RoboVac 30C does not support 5Ghz networks.
802.11b networks will be too slow since they are capped at 11Mbps. The Eufy Home app is compatible with both iOS devices (iOS 8.0 and higher) and Android devices (Android 4.4. and higher).
RoboVac 30C is not as powerful as the the 15C Max version (2000pa), but it does integrate BoostIQ, which is a neat feature also found in the 15C Max model that smartly increases/decreases the power based on the type of floor the robot is on.
You will want to have BoostIQ enabled if the room has a mixture of flooring and carpet. If you have pets at home, you will want to enable Max mode, which is high power suction (1500pa) to help remove fluff off carpets with ease.
Max mode drains the battery faster though, so the robot will only be capable of 40 minutes cleaning before it needs full recharging, which takes 5.5 hours. The other two modes - BoostIQ and Standard - produce less powerful suction but yield longer runtime (60 minutes and 100 minutes respectively).
Alexa/Google Assistant is also integrated, which allows you to start, stop and dock the cleaner using voice control. You do need to have an Alexa-enabled device (i.e. eufy Genie, Echo Dot, etc) or a device enabled with the Google Assistant (i.e. Google Home/Mini version).
There is no voice prompt with language functionality built-in to the RoboVac 30C, like you get with the G10 Hybrid version. Voice prompts are handy as it lets you hear useful information such as the power suction mode the robot is using.
RoboVac 30C does integrate speakers though, so it,will produce a series of beeps when it gets stuck and/or to let you know the current power mode (i.e. 1 beep=standard, 2 beeps=BoostIQ and 3 beeps=Max).

Loud noises can be detrimental to ears, yet noises are part of every day life and can sometimes be helpful or needed! Take for instance, the piercing noise of an ambulance siren or the ear-splitting noise of an alarm clock, which is at best annoying but needed to jolt you out of bed!
Even seemingly benign past times such as watching your favorite artist at a concert can be seriously detrimental to your health. According to statistics, rock concerts are, by far, the worst environment for ears to be in because rock concerts carry painful, consistent decibel noises (150dB).
.To put in perspective, the noise at a rock concert is louder than the noise of a jackhammer (130dB) or jet engine taking off (120dB), all of which are in the threshold of painful noise.
A neat way of turning painful noise into music to your ears it's with the ISOtunes FREE, which is both a noise blocking earplug and audio solution for those who want to lower the decibel volume of noise, while listening to music or favorite podcast.
In terms of comfort, the ISOtunes FREE are more convenient to wear than the ISOtunes PRO version because no cables get in the way, which is nice. That said, the PRO versions are actually more comfortable to wear because of the larger foam tips. The ISOtunes PRO version are also feel more secure to wear around machinery. The PRO over-ear hooks provide piece of mind that the earphones won't fall out of the ears and/or possibly getting jammed inside machinery.
Being wireless, the ISOtunes FREE also integrate a bluetooth chip (bluetooth 5.0 chip) that supports aptX, a long wireless range and lower power consumption. You can get 7 hours of playtime from a single charge with an additional 14 hours from the included charging case, which recharges via 5V/0.5A input, taking 3.5 hours to fully charge. Standby time is 5 days.
The ISOtunes FREE earbud shells are made of rubberized plastic and are sealed shut to prevent water/dust ingress (IP45 water resistant). The nozzle neck is also rubberized and threaded. The ISOtunes FREE earbuds weigh 4.5 grams each so, they are extremely lightweight.
The front panel is made of plastic and hides a physical button, which is tactile but requires pressing, which forces you to jam the earbuds slightly into the ears. The buttons control several functions, including power on/off, audio playback (volume, skipping) and call functionality (answer/end calls). The easiest way to turn off the earbuds is by putting them inside the charging case.
Inside the ISOtunes FREE charging case, there is a bright neon green color scheme and three charging prongs that deliver fairly quick charge to the earbuds (full charge in just 1.5 hours). The charging dock area has access points on either side to make it easier to grab the earphones out of the case.
The charging case has a rather unique design with a tall but slimline frame body. Total dimensions of the charging case are 80mm long, 26mm wide and 34mm tall. The weight is 32 grams.
As far as sound quality, the ISOtunes FREE also come with limited volume at 85dB. Just like the PRO version, the ISOtunes FREE true wireless version are also OSHA approved and NIOSH compliant. The ISOtunes FREE do have a lower Noise Reduction Rating (22dB NRR) than the ISOtunes PRO, which have a 27dB Noise Reduction Rating.
The lower NRR rating of the ISOtunes FREE true wireless earphones is a good thing if you don't want too much isolation. At 22dB NRR, the ISOtunes FREE will reduce 7.5dB so, if you are exposed to 120dB, the noise will be reduced down to 112.5dB. The calculation for working out how many noise decibels are actually being reduced, you simply subtract 7 from the NRR and then divide by 2.
Audio-wise, the ISOtunes FREE deliver good sound at high and low volume with exceptional deep bass, thanks to the noise isolating earplugs, which do a better job than regular foam tips at sealing in the bass frequencies.
The bass doesn't overwhelm the upper frequencies so, you still get a good reproduction of vocal and instrument sounds. The audio call quality is also good, thanks to dual microphones (one microphone on each earbud).
The pickup pattern is omni-directional, which is not the most ideal, unless it has noise cancellation, as it picks a lot of background noise. The ISOtune Free microphones do integrate noise cancellation on the microphones so, background noise is minimized.

There is no secret that heart rate chest straps are much more accurate than wrist-based heart rate monitors; hence why health professionals use chest straps when doing an electrocardiogram (ECG) test to measure the electrical activity of the heart.
Heart rate monitors such as the Polar H9 work similarly to hospitals ECG machines but instead of, sending ECG data to a tethered ECG machine, it gets sent to a smartphone via wireless connection, which is very convenient.
The Polar H9 sensor can send heart rate signals via both Bluetooth, ANT+ and GymLink 5kHz so, the Polar H9 can work with sports devices, gym cardio equipment and mobile apps, including Polar Beat, which is available to download on Google Play Store and the App Store.
The Polar Beat app doesn't require having an account but, by signing up with an account you get full access to the app features, including over 100 sport profiles that you can train with.
Polar H9 sensor can be connected to the Polar Beat app two ways. The easiest way is by tapping the sport profile you want to train with. The second way to connect the H9 sensor to the Polar Beat app is by searching for the H9 sensor via the settings and manually pairing to it.
With Polar Beat, you can let the app guide you through the exercise via real-time voice guidance, which can be manually disabled. You can also set specific training targets, including calories, distance, duration and set goals via ready-made workouts via the option "benefit target".
After the workout is complete, you get a written overview of your training workout, including feedback on how to can improve future training. You can then save or share the training feedback on social media.
As far as the bluetooth transmission range, it varies and depends on how the Polar H9 sensor is positioned on your body and how far it is from the device is connected to. You can get a good bluetooth transmission range indoors or outdoors via direct line of sight. If there are thick walls in between and/or the bluetooth signal cannot bounce off, the bluetooth transmission range will decrease drastically down to 5-10 meters.
For the Polar H9 sensor to work properly, it has to be clipped to the strap and attached properly to the chest so, the sensor can pick up a heart rate.
You will also have to slightly wet the conductive rubber electrode that is located on the underside of the strap. This is to help conductivity between the skin and the rubber electrode.
You only have to moisten the strap initially since sweat during the workout will then facilitate conductivity. The strap doesn't have to be extremely tight or tight at all on the chest.
As long as the strap is fitted on your chest securely, the strap's rubber electrode will pick up consistent heart rate. When the H9 heart rate is removed from the chest, the connection does not shut off automatically. It remains active until the H9 sensor is disconnected from the app or device it's connected to.
The Polar H9 sensor is powered by a coin cell CR2025 battery, which is accessed by prying open the circular panel (battery cover) on the back of the sensor. The battery cover has a ring rubber gasket around it to prevent water/dust ingress, making the Polar H9 heart rate sensor water resistant.
You can can get 400+ hours of battery life from the coin cell CR2025 battery so, if you were to use the Polar H9 an hour every day, the coin cell CR2025 battery would last longer than a year before you have to replace it. You won't have to access the battery compartment during normal use, unless you need to reset the Polar H9 sensor, which is done by removing the battery for 30 seconds.
You can use the Polar H9 sensor in water but not standalone like you can with the H10 heart rate strap and OH1 arm band sensor, both of which have on-board memory storage. The H9 sensor does not have built-in memory for storing training sessions and, the H9 sensor will not connect to the Polar Beat app via Bluetooth while in water so, you cannot take the H9 sensor for a swim and a start a training session with the Polar Beat app.
The only way to use the H9 sensor in water is with an ANT+ or GymLink-compatible wrist unit during the swim. ANT+ and GymLink can be manually disabled from the Polar Beat app.
The H9 sensor cannot be used simultaneously with two bluetooth devices, the same way you can with the H10 sensor, which can be connected to gym equipment and a Polar device at the same time.
As far as the Polar H9 chest strap construction, it is made of 38% polyamide (nylon fabric), 29% polyurethane (flexible plastic), 20% elastane fabric and 13% polyester fabric, which makes the Polar H9 chest strap have a soft and elastic construction.
Being made mostly of nylon fabric, the Polar H9 strap is durable, as well as breathable. That said, the strap is prone to sweaty smell build up unless it is rinsed as suggested, after each workout.
The Polar H9 strap should last you a long time and it's very comfortable to wear on the chest than the hard chest straps that have the heart rate monitor built-in. The Polar H9 strap is lighter, weighing just 61 grams (including the sensor) and, because the strap is made of soft materials, the Polar H9 strap conforms to your body shape so, after a few minutes you don't notice you are wearing it.
The Polar H9 strap measures 3cm wide and 61cm (2ft) long, while the rubber electrode measures 30cm long (roughly the distance from nipple to nipple). The actual Polar H9 sensor weighs just 20 grams and measures 6.5cm long, 3.5cm wide and 0.5cm thick.
The Polar H9 heart rate sensor chest strap can be paired with Polar sport watches that allow a sensor to be paired. These include the A300, M400, M430, M450, M460, V800, A360, A370, M200, M600, Ignite, Vantage M and Vantage V.