What’s your settings for getting it to partly follow the external thermometer?
Hello! Are you speaking about these ones?
https://www.amazon.de/-/en/gp/aw/d/B08DRCVDG4/ref=cm_cr_arp_mb_bdcrb_top?ie=UTF8
Thanks that helps a lot… I hope they can work with the flashed Sonoff ZB Bridge!
Yes, that would be them!
Here’s the code 
#scripts.yaml
bathroom_temp_follow:
alias: Bathroom Temp Follow
sequence:
- service: zha.set_zigbee_cluster_attribute
data:
ieee: 84:2e:14:ff:fe:5e:41:dc #ieee of TRV
endpoint_id: 1
cluster_id: 513
attribute: 16405
cluster_type: in
value: '{{ (states("sensor.bathroom_air_temperature") | float * 100) | round(0)}}'
mode: single
#automations.yaml
- id: '1612470219876'
alias: TEM01 - Update External Temp - Bathroom
description: ''
trigger:
- platform: state
entity_id: sensor.bathroom_air_temperature
condition: []
action:
- service: script.bathroom_temp_follow
data: {}
mode: queued
max: 10
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Hello,
I have purchased a Danfoss in the end. I ended up needing some help to set it up and create automations but when that was done i am very satisfied with the result. Here is a thread i opened that explains how i set it up:
I hope this helps
Thank you, how about the batteries? Did you have to exchange them already, or they are still functional?
I’ve bought several Immax valves, but the batteries died after month or two, so I’m looking for some advice or comparison.
I have just gone through 2nd winter (I keep the valves turned off from middle of spring to middle of autumn), and they are all around 40% in power (got 5 Danfoss devices).
I already have rechargeable batteries ready, that I will switch to next fall.
Thank you, what is your radiator valve body?
My radiators have old Giacomini bodies installed, so I used plastic reduction when installing the valve.
Although the body is not stuck, it requires quite a force to push down the thing (close the radiator).
Not sure if it is OK, or there exist other valve bodies that can be closed more easily.
Apart from that, what batteries did you use?
I am based in Denmark and through Google I think they are called Danfoss RA-N.
But the Danfoss eTRV came with multiple adaptors. And I am using the batteries that also were supplied with the eTRV.
Ha, strange… Mine came without batteries. I have been using it from February and i have 80% battery left. I assume it will take a year to replace. However, i am not planning to shut it down in the summer because if have heard that water needs to flow in the radiator even if it is not hot water.
I needed to purchases an adapter for my Hertz valves:
@palir - for Giacomini you should use the following adapter although according to the below screenshot it is supplied in the box:
Here is the document: https://www.elektrika.lv/att/documents/0/32/195.pdf
Might have been a cost saving exercise on their end. Irregardless any AA battery will do.
Thank you, mine came without batteries as well, I just read somewhere that it might be better to use lithium over alkaline (or vice versa, not sure anymore), regarding the life duration in valves. But this probably won’t make that huge difference - 1 month vs year or two.
The Giacomini adapter was not included but I managed to buy it and install properly. I was only curious if different types of valve bodies can require different strength to close the valve, as my bodies seem to have quite a resistance. I thought it might be the reason the batteries die so soon.
Anyways, I’ve contacted the company meanwhile and it seems that 2 months is a “normal expected battery life-time with this product”. Although, they say the newer version of the product is improved and the batteries would last much longer.
Such a shame I’ve already bought 8 of the old ones…
2 months seems too fast to discharge the batteries… i would suggest to check the pin on your valve. Before i install mine, i took pliers and moved the pin in an out. Actually, i am doing this on all valves before the winter and sometimes i have noticed that some of them need a bit more power if they haven’t been moving for some time. That’s why i wrote before that i am not planning to disable the TRV and keep my automations running also during the summer. It will keep the pin in motion so it won’t stuck.
Yes, I checked the pin, it moves smoothly, does not get stuck, although it requires quite a strength to push it down completely - seems like the spring is quite hard, I cannot close it completely by a bare finger, have to use something hard, e.g. a screwdriver. But probably I cannot affect that…
Try to sell your Immax products, to get some of the money back and then buy the Danfoss ones.
Has anyone in Australia bought the Danfoss Ally? If so where from?
I bought two of this and ordered two more.
I have it for a month maybe. Heating was on for a few days and they are working fine. I’m a little bit concerned about battery consumption. I use some common battery from store. I’m not sure how long batteries will they last during winter. One actuator battery is on 91 % and another is on 94 %.
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Thanks.
Can I ask what the rest of your heating is? How does this interact with the boiler?
For now, all my other radiators have manual valves. My plan is to install smart ones. I have buderus logomatic 2107. Its old buderus furnace without any smart technology. I dont plan to change it as this is high quality furnace made by buderus. Buderus can be programmed and heating can be fine tuned with this furnace but it doesnt have wifi or any other network connection.
It calculate needing heating power based on outside temperature and various variables that can be set on furnance. Everything is based on some mathematical algorithm made by buderus. But this is working very precise and with no to very little maintenance.