# Invalid properties: output

**URL:** <https://discourse.nodered.org/t/invalid-properties-output/18780>\
**Category:** General\
**Created:** [4 December 2019 08:29 UTC](https://discourse.nodered.org/t/invalid-properties-output/18780 "2019-12-04T08:29:10Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Mikha123](https://avatars.discourse-cdn.com/v4/letter/m/4bbf92/32.png) [@Mikha123](https://discourse.nodered.org/u/Mikha123)\
**Post date:** [4 December 2019 08:29 UTC](https://discourse.nodered.org/t/invalid-properties-output/18780/1 "2019-12-04T08:29:10Z")

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I make program to control ac with nodered, using IR Transmit.  
I had follow this video [https://youtu.be/ZiCPfNIP5p8](https://youtu.be/ZiCPfNIP5p8) but stack in this step ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/2X/9/970adaac17adc0c521ac679072d6cc673b5f8c3e.png)  
when i tried run in terminal followed this tutorial [http://www.piddlerintheroot.com/ir-blaster-lirc/](http://www.piddlerintheroot.com/ir-blaster-lirc/) when i typed : sudo lircd --device /dev/lirc0  
there is warning

 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/2X/9/93e2c0d16c4c07d06e09bcaed14c55c5d8f45fae.png)

and when i typed : irsend SEND\_ONCE LGE\_6711A20015N KEY\_O

hardware does not support sending  
Error running command: Input/output error

I need suggestion and solusion please.  
Thanks.

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**Author:** ![zenofmud](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/zenofmud/32/316_2.png) [@zenofmud](https://discourse.nodered.org/u/zenofmud)\
**Post date:** [4 December 2019 10:52 UTC](https://discourse.nodered.org/t/invalid-properties-output/18780/2 "2019-12-04T10:52:27Z")

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Did you reboot your Pi like is says to?