# Mini Lora Node

**URL:** <https://www.thethingsnetwork.org/forum/t/mini-lora-node/8335>\
**Category:** Uncategorized\
**Created:** [July 6, 2017, 6:05pm UTC](https://www.thethingsnetwork.org/forum/t/mini-lora-node/8335 "2017-07-06T18:05:53Z")\
**Posts on this page:** 1\
**Showing post:** 7

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**Author:** ![rharte](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/rharte/32/37824_2.png) [@rharte](https://www.thethingsnetwork.org/forum/u/rharte)\
**Post date:** [July 7, 2017, 11:34am UTC](https://www.thethingsnetwork.org/forum/t/mini-lora-node/8335/7 "2017-07-07T11:34:56Z")

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Hi @Charles, we have an application that does nothing more then send a few bytes to the network four times a day with SF12 and max power, that uses a Renata CR2430. I think it is 285 mAhr. We have calculated that it can run for 3 years. If you can use the deep sleep mode on the ATtiny with an external interrupt (like a door contact) you can go even a factor 4 longer!

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