Geevon Indoor Outdoor Thermometer Wireless with 3 Remote Sensors, Digital Hygrometer Indoor Thermometer, Temperature Humidity Monitor Gauge with 200FT/60M Range

Summary:I have installed this base and two remote sensors. The temperatures displayed appear to be accurate within the specified limits compared with other thermometers. I can not verify the humidity readings as I do not have anything reliable to compare to.Ordinary setup (without the alarms) was very easy.It came in a box that was easy to open and not in a blister pack that requires the user undue hardship.I highly recommend this unit.Detailed stuff:This unit works very well. I did not need three remote sensors, but the reviews were almost all good and the price was reasonable. Compare that to some other perhaps better known brands (at a higher cost), those had too many negative comments. So I bought this unit.Ordinary setup is very easy. Setting alarms appears to be a bit difficult and the instructions are a bit confusing for that. I don't want alarms, so hopefully they are all turned off.One note on the instructions, the detailed instructions say, "To change the channel option on the outdoor sensor open the battery compartment cover, on the upper left side is a button." No there isn't. The channel selection is made by setting the three position switch at the top of the battery compartment. May be a no brainer for many, but I thought I'd mention it.Also the instructions say not to place the unit within three feet of electronic devices. My indoor unit is right beside my computer monitor and less than three feet from the computer. I'm not experiencing any trouble. Your results may differ.I set up the outdoor sensors (I set up two) under a bay window on the north side of the house so they are always in the shade and protected from other weather elements.Early this morning, before the sun could have an influence on the outside temperature, both outdoor sensors were reporting the same exact temperature. Comparing those readings with a personal weather station about a block away, all the readings, including humidity level were the same.At about noon, the personal weather station about a block away was reporting a temperature ten degrees higher than what my outside sensors were reporting. I often wondered if that personal weather station was inappropriately installed, having compared that to the remote unit I am replacing (a Radio Shack unit I have used for about 15 years). Seems likely.

I use these thermometers in my fifth wheel so I can keep track of the temperature and humidity in the closet, outdoors, in the bedroom, and the living room. For an inexpensive set, they are accurate, easy to set up, and easy to read. I put the outdoor one on one of the slide supports to keep it dry and protected. It's a good set.

I purchased this almost 2 years ago and as far as a multi zone temperature gauge, it has worked great and still does, after 23 months. The hygrometer is another issue. I live in a desert where the humidity is mostly in the teens and often drops into the single digits. Apparently this little unit only measures down to twenty percent humidity, because I just resigned myself to the fact that the humidity was never accurate. Well, I finally caught it one day right after a storm and lo and behold , it actually showed fifty percent humidity! So it does kinda work, but it just doesn't measure the extremes that I live with. Since I was more concerned with the temperature range which seems to be semi-accurate, it's fine for the price. If you live in the Southwest, ignore the humidity numbers because they will stick at 20%, across the board.

I have two greenhouses jammed in my backyard as well as an indoor plant room in my home. optimal conditions make for happier plants- this thermometer works perfectly for keeping an eye on the temperature and humidity in both my greenhouses as well as the plant room.this set includes the main display thermometer, as well as three wireless remotes. each remote is numbered to easily find the corresponding readings on the main display. the screen is big and easy to read. you have the option to hang the main display or pop out the little easel on the back to set it.*the only bummer is that I didn't realize the main unit it also battery operated with no option to plug it in. you'll need two aa batteries for the main unit, as well as two AAA for each of the three remotes. (the good news? I've had this exact same unit in the past and know the battery will last forever!)

I live in an area that has quite a few power outages and I am always worried about my fridge and how warm it gets. My old thermometer stopped working and I bought this to replace it. Plus I thought I could place a few more around my house.Once I got batteries into everything, I left them laying out all next to the receiver to see how well they worked. While they may not read the actually temperature with 100% accuracy they all read the same temp. This is better than some of the scientific equipment I have used in the lab. The humidity was off by 1-2 numbers, but that isn't bad and I am not really worried about humidity as much as temp.I did place one sensor outside and the receiver is about 50 ft away. It is registering it quite without an disruption. I also did put one in the fridge and it is about 20 ft away from the sensor and it works just fine. I also put the sensor in the freezer for a brief time and it did register below zero so seems these receivers do work below zero for anyone who lives in a northern area.I feel both the quality of the sensor and receiver is great. I have no issue seeing the temps on the receiver and do not have to get too close to it. They are large enough to read easily. I did not read the directions or mess with any of the alarm settings, so I cannot atest to how well those work.

It works great, it appears to be pretty accurate.

Display and blinking connection light on one of three the sensors stopped working after 7 months. This was a sensor that was outside. It was generally covered and out of the elements but outside nonetheless. The sensor still connects to the main unit but there is no indication on the sensor itself. Tried different batteries but display is still defective.*Update 2 (12/18/2025) - The defective sensor stopped working completely at 1 year. I opened it up and it had some corrosion on the battery terminals and where the wires are soldered to the board. I cleaned everything up and soldered two new wires to see if it would come back to life. It was dead. After opening it it doesn't look like it's designed for outdoor use. No seal. Other two sensors are still working but they have been used inside only.*Update - The seller contacted me after my review and offered a full refund. I accepted. They then reneged on it and ask for my address to sent a replacement unit. However, Amazon specifically says in the messages to not to give out personal information so I didn't. They are now offering a $7 refund for one of the sensors. This would be fine if they would have led with that. They contacted me first and offered a full refund, I never contacted them about the sensor. I just gave my review for the experience I've had with this unit.I'm not happy with their customer service. It's not about getting a full refund for something I'm still using. It's about them offering it in first place and then walking it back. Again, they contacted me with that offer.

Good results and history feature is a very useful plus. I used this in multiple storage bays in my 34’ motor coach after freezing temperatures to evaluate temperature difference from coach interior.The results were invaluable in placing small heaters to avoid freezing water lines.

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While I haven't tested this for the claimed 60m range (Clear line of site), it is working faultlessly at 35 m from a cupboard in my garage, through plywood doors, across the garden, 90 degrees right through double glazed oak patio doors and across the kitchen. All are reading within half a degrees C of each other when all in exact same environment. Good accuracy and very consistent. Remember to allow a good long time for humidity to be detected well (true of all humidity testing, its never instant on any device).Love this product, and highly recommend it. Great price (29.99), no frills, just works great. (reviewed after 30 days).Super easy to use and reset MAX / Min temps individually.

Work very well.2 in sheds - over 30 feet from base and always transmit good signal.Very pleased with purchase.

Es perfecto para el precio que tieneLas lecturas de los sensores son bastante precisas, aunque la unidad principal con la pantalla grande a veces se desvía un pocoAdemás, se puede cambiar la temperatura de los sensores de Fahrenheit a Celsius: basta con quitar la tapa de las pilas y, a la izquierda del selector de canal, hay un pequeño orificio donde se puede introducir un alfiler y pulsar el botónSería muy útil que esta información apareciera en el manual de instrucciones

Excellent! Hooks up fast and easy, accurate and reliable. Works 200 feet away from the base, base is indoors too. I have one of the sensors in my shed, so I can see what the inside temperature of the shed is without going there, mostly because I have unheated lithium batteries in there so I need to know what the temperature is in there at all times. This set up works perfectly so far! Comes with 3 sensors plus the base is a thermometer as well so its a very good set up for the money....5☆