VIVOSUN Indoor Outdoor Thermometer Wireless Digital Hygrometer Temperature and Humidity Monitor with Touchscreen LCD Backlight, 200ft/60m Range, Battery Included

Have bought a few of these because they are my favorite among the ones I've tried. Nice large numbers and large display, high contrast LCD. Pretty long battery life, even with rechargables. The sensor batteries especially last a long time (I use lithium so I don't need to change them much, lasts well longer than a year). Nice to see the humidity levels inside and outdoors. Up to three channels for multiple sensors. It can progress through each sensor, showing the value, then moving to the next. Or you can set each one to show just a single sensor, and flip through by touching the screen. Very functional touchscreen. Nice blue light when you want it. Seems like good accuracy. I keep one in the fridge too, and put a sensor down on the bottom shelf in the back. That gives me two temperature measurements so I can keep it good and cold but without freezing stuff in the back. I don't like the white color. It visually dims the display effect. So I put some black gaffer tape along the edges to make it completely black. I think it looks much better this way, and also gives it a nice grip texture. I think they should make them flat black not white. Great product, have had a few for several years, no failures. It's the only kind I use now.

UPDATE...I came to order another Vivosun thermometer (this time with multiple sensors) and thought I'd update the review. Everything from the original review still applies and after 3.5 years and the product is still recommended... - It is more accurate than its specs state. For the unit I received, the temperature is accurate to within 0.5°F (as measured against a very accurate and calibrated thermometer). The indoor hygrometer syncs very closely with my dehumidifier's humidistat reading as well. - It is higher quality than another similar brand (which quit after only a few months). This Vivosun is still working perfectly. - It is expandable (up to 3 sensors). If you don't want to have 3 screens to read 3 areas, that's OK. Just buy another sensor or two and add them to your current unit. Set up is quick & easy. - No need to install any app. This uses local wireless RF (not 802.11 networking) -ONLY bone of contention I have is that the screen-unit needs larger (or more) batteries. It takes 2 AAA (same as the sensors) but with an always-on, sometimes-lighted screen, it really needs either 4 AAA or 2 AA so they don't need to be replaced so often (about every 3 months) (the sensors are fine with 2 AAA) Extra Note: - If you have multiple sensors, you can set the display to show 1 sensor all the time (and then manually tap to see the others) OR you can set the display to cycle continuously through all the sensors at 5 second intervals. This is not listed in the instructions, but is a welcome feature. ORIGINAL REVIEW from 3 1/2 years ago: Been a couple of months now... Wanted to see how it was before writing a review. In short, it's pretty good. I can't really find anything that should knock off a star. The display is large enough to read from about 10 feet (3 meters). A lower-left screen-tap turns on the back-light for a few seconds. The outdoor sensor reads accurately and the humidity sensor seems to work well enough too. No wires is nice, and so far, the battery does not show any signs of wearing down yet. So overall, I'd recommend it and so far, I'd buy it again.

UPDATED: I contacted customer service and they were very helpful and refunded the price without hesitation. I think I just got a dud! I’ll order again, as I did like it before it stopped working, and the other reviews were so good. The light stopped working after about a month, and now, 3 months later, the outside sensor has stopped transmitting, and the main unit won't change to farenheit. Fresh batteries made no difference

Upon unboxing, the main indoor unit feels lightweight and sleek, with a clean design that blends well into any room. The touchscreen LCD is clear and easy to read. The wireless outdoor sensor is compact and appears durable enough for outdoor placement. Setup was remarkably straightforward: insert batteries (included, a nice touch), place the sensor, and the units paired almost instantly. Pros: Accurate Temperature & Humidity Readings: The VIVOSUN consistently provided accurate readings for both indoor and outdoor temperatures, as well as indoor humidity. I cross-referenced it with other calibrated devices, and its readings were consistently within a very acceptable margin of error. This reliability is crucial for effective monitoring. Clear Touchscreen LCD with Backlight: The 3.3-inch LCD display is large and very easy to read at a glance. The touchscreen functionality makes it simple to switch between units (C/F), clear min/max records, and activate the bright blue backlight. The backlight is particularly useful for checking readings in low-light conditions. Excellent Wireless Range (200ft/60m): The 200ft/60m range proved robust in my testing. I placed the outdoor sensor a significant distance from the indoor unit, through multiple walls, and the connection remained stable without dropouts. This allows for flexible placement of the outdoor sensor without worrying about signal loss. Min/Max Record Keeping: The device tracks and displays the minimum and maximum temperature and humidity readings for the past 24 hours (or since last reset). This historical data is incredibly useful for understanding environmental trends in your home or garden. Simple Setup & Operation: Pairing the sensor with the main unit was virtually automatic. The interface is intuitive, requiring minimal effort to get started and operate effectively. Versatile Placement: The main unit features both a tabletop stand and a magnetic back, allowing for flexible placement on a desk, shelf, or refrigerator. The outdoor sensor has a hanging hole and is splash-proof for outdoor use. Batteries Included: A small but welcome detail, the inclusion of AAA batteries for both units means it's ready to go right out of the box. Cons: No Outdoor Humidity Sensor: While it monitors indoor humidity, the outdoor sensor only provides temperature. For some users, especially those monitoring grow tents or specific outdoor conditions, an outdoor humidity reading would be a valuable addition. Outdoor Sensor Not Fully Waterproof (Splash Proof): While rated as splash-proof, it's not designed for full submersion or direct, prolonged exposure to heavy rain. Placement under an eave or in a sheltered spot is advisable for long-term durability. Backlight Timeout: The backlight is not continuously on, requiring a touch to activate, and it then times out. While this saves battery, some might prefer an always-on option (though this would drain batteries quickly). Overall Input & Verdict: The VIVOSUN Indoor Outdoor Thermometer and Wireless Digital Hygrometer is an excellent, reliable, and user-friendly device for monitoring environmental conditions. Its accurate readings, clear touchscreen display with backlight, and impressive wireless range make it a standout product in its category. While the lack of an outdoor humidity sensor and the outdoor unit's splash-proof (rather than fully waterproof) rating are minor considerations, they do not detract significantly from its core functionality. For anyone needing to easily track indoor comfort levels and outdoor temperatures – whether for home comfort, pet care, or basic garden monitoring – this VIVOSUN unit is a highly recommended and value-packed solution.

Não vale a pena. Caro para o que entrega. O sensir externo não funciona corretamente. Para de funcionar com frequência. Dinheiro jogado fora.

Simple and works really well! I take it all over the house and the yard. Worth the extra bucks compared to a wired hygrometer

Ótimo

Very happy with this purchase. Used it all spring to monitor conditions inside our greenhouse. Handy sensor just hangs from the roof inside (attached twine to it) and the display is inside on the kitchen counter. Very accurate, easy to read and good info at a glance. Very happy with this purchase.

I put it in my detached garage to track its internal temperature so I know when to turn off the dehumidifier. Works gereat, not sure about the battery life as the original batteries just ran out and they may have been on a shelf for a few years.