Additional Indoor Module for Weather Station, Monitoring Temperature, Humidity and Air Quality (CO2), Smartphone Control, NIM01-WW, Accessory

Intially I was torn between 4 and 5 stars for this unit because they aren't perfect and have some issues here and there. However, the people behind netatmo are constantly looking to improve their devices and actively update them on a regular basis. Setting up this additonal module is so very easy, you just connect to your webpage, browse the settings and click add new module. Give it a name and you are done! Cons Sometimes disconnect for no reason and require resetting Some readings slightly off on the sensors Pros These things work over a great distance. I have one in an enclosed wine cellar that has no windows and yet it still manages to talk to the main unit at the opposite end of the house without issue. Netatmo support are very helpful and will reset/callibrate all of your sensors to match. The temperature reading on my units is absolutely spot on matching my mercury old school thermometer perfectly. The humidity sensor is also much more accurate than the ones in my previously purchased sensors. Overall, I am loving my Netatmo sensors that allow me to keep an eye on my wine cellar no matter where I am in the world.

I bought this to monitor the temperature of my parents garage to be able to take preventative measures if I thought pipes might freeze over. Have had it for over half a year now, and has proven reliable and is still on the first set of batteries. Overall very happy with this and can see the readings remotely. Update Jan 2019: After having this for almost a year now, it's still running fine on the original set of batteries. The app status shows that it is running at around half. Update Aug 2019: This is now on it's second set of batteries since around April and they showing about 3/4 full still. Have a second Netatmo account linked to this and can confirm that you can share the data from this with other NetAtmousers (in addition to data from the main modules) Update June 2020: Have changed to a 3rd set of batteries arond February 2020. This is now showing at around 3/4 full in the app. It is on v50 of the firmware and everything still seems to be functioning fine. Update 17 Oct 2020: So good, I bought a 2nd one a few months back and then I bought a 3rd one of these on Amazon prime day. I've now got these sensors at various places in the house which means I can really get a good measure of where is warm and cold in the house over time, and thus adjust my radiator TRVs accordingly to fine tune for a consistent temperature. Great stuff.

This is a great device, and the extra module is a useful extension. I nearly tore my hair out for 20 minutes trying to get it to connect to the base station. It kept saying it couldn't find the additional module. Then I had a brainwave. So if yours doesn't connect try this: First, ensure batteries are in the right way round so that it flashes green on the top of the module. Second, disconnect the batteries. Third turn the base station off at the mains. (really!). Wait a minute. Fourth, turn on the base station and in the app it reboots itself. THEN go through the touch the top of the station to turn it flashing blue and reconnect the batteries in the additional module close to the station. The internet of things decided at this point to cooperate ...

I never bought this to use in the way it was intended. I bought this to purely monitor temperatures in my 19” rack that house some network gear as I was concerned about excess heat in the case which is located in a poorly ventilated part of the house. Setup is straight forward through Netatmo all. Works very I have not had any conection problems even though the base station is located at the opposte end of the house. I have since purchased a further 2 and placed these in other parts of the house where heats a problem. There is the ability to link these to Nest through the IFTTT app. So that lets say tenperatures reaches a predetermined level it switches off the heating. This is a good concept but I have found it does not work in practice. Maybe its the IFTTT app or I have not set up correct.

Easy to set up, work well with the base unit. Not sure about battery life as I only had them for a few weeks. Also, app shows not so great signal on one of my modules in my small apartment. People with large houses may have problems with connectivity to the base unit. Unfortunately these don't seem to have any sort of light/display. One of the modules I got was not well calibrated, showing 2500 ppm in an empty ventilated room. Managed to calibrate itself overnight, so all of the units are have show reasonable values.

I have had the Netatmo Weather Station for a number of years and been very pleased with it. Following recent building work to add a sun lounge I decided it would be good to monitor the temperature throughout the day and night, so added the Additional Module. It was straightforward to set up and worked immediately, not needing a mains power supply makes it easier to place anywhere. It’s now possible to monitor the temperature all the time, and great to see how it compares to the rest of the house.

It claims to be “real time”, based upon my industry definition, this is not a real time system. It is sampling every x-minutes; x = depends on the module, for wind it’s every 5 mins! This is not good for accuracy, especially in the UK, where variability between gusts and constant wind is huge. I bought because of the misleading claim to be real time, don’t make my mistake.

Got the weather centre and a few other sensors, the netatmo kit is very good adn reliable, had the internal sensors around the house for 6or 7 years now, without any issues. Have replaced a single external after it stopped working, lasted about 5 years outside.