# Setting celsius parameter on Philio Tech PSM01-1 Z-Wave 3 in 1 Sensor

**URL:** <https://community.homey.app/t/setting-celsius-parameter-on-philio-tech-psm01-1-z-wave-3-in-1-sensor/27436>\
**Category:** Questions & Help\
**Tags:** app, z-wave, devices\
**Created:** [March 23, 2020, 8:19pm UTC](https://community.homey.app/t/setting-celsius-parameter-on-philio-tech-psm01-1-z-wave-3-in-1-sensor/27436 "2020-03-23T20:19:07Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Torstein](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/torstein/32/2043_2.png) [@Torstein](https://community.homey.app/u/Torstein)\
**Post date:** [March 23, 2020, 8:19pm UTC](https://community.homey.app/t/setting-celsius-parameter-on-philio-tech-psm01-1-z-wave-3-in-1-sensor/27436/1 "2020-03-23T20:19:07Z")

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I don’t quite understand how to set the celsius in operation mode no. 5, by using bit 3. Now it says 4:

 ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/1/e/1ed8fac5b110b2855264364e35d4eff666fb538a.png)

The full manual is here (pdf downloads) :[https://www.eldirekte.no/download.ashx/013fe038-83ef-44fa-911e-9d7449d4fafc](https://www.eldirekte.no/download.ashx/013fe038-83ef-44fa-911e-9d7449d4fafc)

![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/e/f/ef506c8f8e660ce7d9aa23dbccbd5ab8d90615f9.png)

Should I send some kind of raw parameter with the developer mode? Or should i set a decimal number in the operation mode box? And how do you calculate this number?

I’ve tried reading up on it here: [https://www.vesternet.com/pages/kb-104-z-wave-device-parameters-hex-dec-binary-bits-bytes-what](https://www.vesternet.com/pages/kb-104-z-wave-device-parameters-hex-dec-binary-bits-bytes-what)

But i still don’t understand how to calculate it. Please help!

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**Author:** ![Caseda](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/caseda/32/138695_2.png) [@Caseda](https://community.homey.app/u/Caseda)\
**Post date:** [March 24, 2020, 6:01am UTC](https://community.homey.app/t/setting-celsius-parameter-on-philio-tech-psm01-1-z-wave-3-in-1-sensor/27436/2 "2020-03-24T06:01:18Z")

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The bits are in terms of binary (8 bits/values of 1’s or 0’s) where “bit 0” is the most right `0` of the binary value and “bit 7” the most left `0`.

To (for example) just set celcius (it does enable door/window sensor again) you’ll get binary value `00001000` (bit 3 = 1).  
if you convert that to decimal (the value Homey works with), you can use lots of websites on the Internet.  
`00001000` binary = `8` in decimal

Little bit wierd that the developer of that driver (not necessarily the app developer) sets the value to 4 (`00000100`), as that disables the door/window function.  
But if you want to keep that disabled you need the binary value of `00001100` = `12` decimal

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<div class="post-metadata">

**Author:** ![Torstein](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/torstein/32/2043_2.png) [@Torstein](https://community.homey.app/u/Torstein)\
**Post date:** [March 24, 2020, 11:11am UTC](https://community.homey.app/t/setting-celsius-parameter-on-philio-tech-psm01-1-z-wave-3-in-1-sensor/27436/3 "2020-03-24T11:11:10Z")

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Thanks for your awesome reply! I would give you 5 out of 5 stars if possible! It was really simple to understand your answer, and how it works now. I feel a bit stupid now, but that’s on my account 😛

I will set it to 8, because I don’t want to disable the main functionallity of this sensor 🙂

Thanks again 🍰