La Crosse Technology TX37U-IT 915MHz Wireless Temperature Sensor

It works! This is sort of a long story, so lets begin at the beginning. First one I had that came with the station, worked fine with two stations as well. (one transmitter, two clock/weather receivers). Then one day.. it fell and broke. oh well.. get a new one. worked just fine. then it fell and broke.. most of this is my fault since I never attached them to the wall or anything. just laying on an old bench car seat on the back porch. received another. i think the batteries in this one just died,, tried new batteries.. didn't work.... ok.. got this one.. (ok,, this is the 4th one if you're keeping track. it didn't work. tried every which way to put the batteries in. transmitter first.. receiver first.. etc.. then it dawned on me.... there were still batteries in one of the other previous transmitters. took them out.. and now the new one worked like a charm. evidently it was still trying to transmit (something), and was interfering with the new one. Just thought i'd pass my experience on for those who say this item doesn't work.

This worked with my LaCrosse 8418it. It initially didn't work, even after impatiently pulling the batteries from the clock and re-inserting them, but I followed instructions in the manual that said to remove the batteries from the clock and the transmitter for 10 minutes and then insert the batteries into the transmitter before the clock; after this, the clock detected the transmitter within several minutes.The old transmitter lasted at least 7 years, I think it died because, from visual inspection, corrosion built up on the electrical components mounted to the transmitter's PCB. It's difficult to open the transmitter, but I'm considering cracking open the new transmitter at least once a year and cleaning the PCB with some electronics cleaner spray and a toothbrush to see if I can't make this one last longer.I went without my outdoor temperature for about two months, I'm glad to have it back.

I got a La Crosse WT-5220U-IT alarm clock with indoor/outdoor temperature as a gift a while back and had my outdoor temperature sensor placed, as you might expect, outside. One day I discovered my outdoor temperature reading was blank, so I went outside to try to find the sensor, thinking maybe my batteries had died. Turns out, the sensor was nowhere to be found. Maybe it got stolen, or maybe it got blown away in the winds that I'm pretty sure we weren't actually having that day. Who knows.Anyway, I was relieved to find that I didn't need to buy an entirely new alarm clock just replace my missing sensor. I went to La Crosse's website to see what sensor I needed for my model (WT-5220U-IT), and this is the one they said. Note that there are multiple sensor models, so if you're looking for a replacement, make sure you get the right one. I followed the instructions for setting it up, and everything has been fine since then (almost a year now).

We moved homes and forgot our other sensor behind.Make sure you check which frequency your clock has before ordering, since this one is restricted to 915MHz only.Unit is a bit pricey, but better than ordering a whole new unit.Accuracy is excellent as long as you don't have it mounted next to a window or other temperature leak that would affect its accuracy.Two notes: as per the instructions, the clock batteries need to be removed and the sensor batteries installed. Within one minute, install the batteries for the clock and the units should sync within 5 minutes. I put the sensor next to the clock to sync to ensure distance was not a problem.Second note: if the units do not sync up and you have powered them up in the right sequence, check the batteries in the clock. I could not get them to sync...and the clock did not display a low battery indicator. However, when I checked the batteries in a battery tester, they were both low. Installing new batteries solved the sync problem.Best approach: install fresh batteries in both units.

My old wireless temperature sensor (which came with an atomic clock) stopped working about a year ago, after some unscrupulous painters decided to paint right over it. I tried cleaning it, but it was a lost cause.I bought this replacement instead of spending double the amount to buy a new clock and sensor together (a penny saved...), and after putting in the batteries, and pulling and replacing the batteries in the clock, it started working within seconds.I mounted it in the same place as my old sensor, about 60' from the clock, and within a few minutes, the temperature reading was matching the temperature as reported by the local Weather service station within a degree.If the current sensor you have is a TX37U-IT, this is a perfectly identical replacement.

Seemed to work at first although it didn't appear to be very accurate. When compared to an actual thermometer it was off by 4-5 degrees but I was able to live with that. I was using it to monitor the inside temp of my RV fridge and when I returned from a business trip, it reported the interior temp of the fridge to be 90 degrees so I thought "crap! Everything must surely be spoiled." But the fridge was fine at 38 degrees. It only lasted for two weeks. How do I get a replacement for no charge?

This didn't work with my clock. My clock seems to be working fine, but the outdoor sensor would not respond to it. I've had the clock for quite a few years, and my outdoor sensor went out, so I ordered a new one. I've tried many times and I can't get it to work with my clock. My clock still works for some reason, so not sure which one is really not working properly.