F007TH

I've used this model for several years and it works well to monitor the temperature of an outdoor pool. The transmitter is rugged and can tolerate winter weather, but the thermocouple wire can be torn by ice freeze/melt cycles in the winter. To be safe, remove thermocouple wire from pool. Although the can tolerate winter, when it stops transmitting you should replace the batteries to avoid battery leaking. If you leave the dead batteries in the unit with high heat and/or cold, you run the risk of the dead batteries leaking and damaging the electronics. It is safer to remove the batteries after the swimming season ends.

I really like these temperature sensors. They work much better and are longer lasting than any floating pool thermometer I've used, even the really expensive ones. I first bought this model in Feb of 2016, and it only just now died (water got into the back and corroded the batteries...probably would still be going if that hadn't happened). I use mine in my pool in SW Florida, so it's outside in the heat and exposed to elements 365 days a year. To help it last as long as possible, I put the whole thing in one of those plastic waterproof cell phone cases with just the sensor wire sticking out. Then I put it on a little shelf on top of my skimmer basket, so it's protected from rain and sun and hurricanes and whatnot, plus no one in the pool trips over the wire. Probably would have kept working for another three and a half years had water not somehow gotten into the plastic case (most likely when someone changed out the skimmer basket and knocked it into the pool). Still, not bad for $8.

I got this to be able to view my pool temperature from inside the house, and while it works, it wasn't as easy as I'd hoped. I mounted it on a post about a foot off the ground facing the house about 50 feet away. With the receiver inside against the window with unblocked line of sight, no reception. Luckily when I rotated the receiver 90 degrees it magically worked (the antennas must have been poorly aligned when both devices were upright). Now its working fine, just very sensitive to orientation, and I get taco neck checking the temps. On accuracy, it seem consistently 2 degrees high, so it is usable and precise, but not accurate. Also, since it will live outside, I dissembled it and put silicone conformal coating on the circuit board and components since corrosion there is what kills most of my outdoor electronics, and that went without an issue. I'll try to report back on longevity as I expect the transmitter to last a long time, but the insulation on the sensor wire will probably succumb to chlorine and UV degradation. The receiver I'm using this with is the WS-10.

Easy to set into working with existing monitor.

Works fine. It replaced older one that quit after a few years.

I bought 4 (weather station) sensors & 2 consoles 4 years ago; sensors outside front & back of house, sensor upstairs in the bedroom & downstairs in the den; console in bedroom & den. I've changed batteries from time to time & they continue to start back up just fine. Recently when I retrieved one that wasn't transmitting, I found a battery had leaked inside, essentially killing it. So I ordered a replacement sensor. It showed 20 degrees more than it should've. I did a Return/Replace, the replacement was doing the same thing. I tried again. Update 7/10/25: Fortunately, the 3rd sensor I received shows accurate temperature & it only took a few minutes for the consoles to recognize the new sensor. The original sensors & consoles continue to work good with the exception of the sensor my leaky battery killed. Alexa can tell me the temperature outside, but I especially like knowing that my bedroom is cool enough (portable A/C & fan) before I go up to bed. It's also interesting to see the major temperature difference between the shaded one on the back deck & the one on the sunny front porch.

Sends out 433mhz temp/humidity/batt-level signal that's easily decoded by rtl_433. Device has hardcoded (random) house number (mine didn't appear to change when batteries were changed), and switch selectable ID (1,2,3 or 4) so you can have multiple devices and tell which is which. Battery life seems good. Range is about 30-50ft through multiple thick walls/steel siding but depends on radio noise/interference as 433mhz can be busy.

We bought these to use to monitor air and soil temperatures in our garden and in our rabbit barn. I was really disappointed to discover that they are only accurate within 2 degrees either way - and of course, it didn't say that anywhere in the product description. That's a significant difference when you're trying to measure what difference you are achieving in the air and soil using row covers, cold frames, and hoop tunnels. If you are comparing air temperature in the garden, and air temperature in a cold frame, and they are both off 2 degrees but in different directions, that could be as much as 4 degrees difference. Significant when some types of covers only buy you 4-6 degrees in temperature protection! We bought 8 total sensors, and allowed them all to sit right next to each other for several days before installing, and none of them registered the same temperature. So we thought about trying to make it work anyway - after all, we're just hobby gardeners, not a nursery. Our house is about 80 feet from our garden, and with just one wall or window (we tried both), we couldn't get readings from the sensors down in the garden. Granted the signal also had to go through the twin wall polycarbonate of the cold frame, so I guess that's two obstacles. What the product description also doesn't tell you is that for every obstacle that the signal has to go through, the range is effectively cut in half. So you start with a range of 300 feet, go through a wall and you're down to 150 feet (or more, depending on what the obstacle is made of). Go through another obstacle and the range cuts in half again, so you only get 75 feet. And so on... So our next move was to take the base unit down to the garden and put it inside a rubbermaid bin about 10-25 feet from the various sensors. Still two obstacles to every sensor, but almost no distance. You guessed it, it still didn't keep connection with all the sensors and you have to reset them. Added to that, you have to actually go to the main unit every day to record the min/max for each sensor, maybe not a huge deal since you need to go out to the garden regularly anyway. It is easy to reset them, but if you're recording your min/max temps every morning (for example) and you go out to find that a sensor (or five) lost the signal - you won't get an accurate range, because if it stopped the evening before you won't get a reading for how low the temp went overnight. There are other systems out there that you can buy for not much more money (watch sales). The system we bought to replace this one actually has the air and soil thermometer in each unit, so if you buy eight of those you can actually get up to 16 readings if you're using both the probe and air sensor in each unit! **Update 6/12/14 For those who marked that they don't find the review helpful, I'm sorry that you disagree with a negative review, but that's what the review system is all about! We followed all the instructions, we researched and asked questions, so we know how and why things work the way they do with these types of systems. The negative review wasn't about the temperature variation, it was about the fact that the sensors could not communicate with the base unit, even when we moved the base unit down into the garden with the sensors, so it was within 15-25 feet of each sensor with two thin barriers between each sensor. Based on the specs by the manufacturer, it should have worked, yet we had to reset more than half of the sensors each and every day, no matter what we did. Maybe we got a defective unit - we had conversations with the manufacturer were told that was just the way it was, and it wasn't defective by their definition, even though it didn't work. Bottom line, our sensors would not effectively communicate with the base unit, We bought a system from another company that basically had the same specs and same setup as this system. We set it all up, with the base unit in our house vs. having to be down in the garden, and it has been working perfectly all this time. **Update 8/12/14 Since a couple people asked what we're using - we bought our system through http://www.harrisseeds.com/storefront/s-283-thermometers-weather-stations.aspx when the sensors were on sale for $14.95 each. That model has been discontinued, but they do have some on clearance for 29.95 as of today. Ours have the label 'Weather Direct" on them, and through their website we are able to view the sensor information, set alarms, and download all the data to a spreadsheet. As of today we still have not needed to reset a single sensor.

Have the main bar station, these are additional sensors to distribute in my humidifier to control humidity and temperature

Works as advertised. when calibrating, all sensors were within 2% and 1 degree. Alarm function is hit and miss - alarms randomly going off during the night.

Second additional purchase. Expensive and unreliable. Buy Something else.