@mfalkvidd OK， i resoved this problem with battery detect in void before ,thanks

@scalz ok ,thanks , i follow your suggestion to Give it a try，，thank you ,:+1:

Hi @huex, welcome to the forum! Insufficient/unstable power supply is the most common reason for NACK. What capacitor(s) are you using? What power supply are you using? If you haven't already, see https://forum.mysensors.org/topic/666/debug-faq-and-how-ask-for-help/ for the most common problems and how to troubleshoot them. You can also use the log parser to help interpret the logs.