# Nodered\_pfc8574 addresses too restrictive in UI settings
**URL:** https://discourse.nodered.org/t/nodered-pfc8574-addresses-too-restrictive-in-ui-settings/38289
**Category:** General
**Created:** [30 December 2020 15:48 UTC](https://discourse.nodered.org/t/nodered-pfc8574-addresses-too-restrictive-in-ui-settings/38289 "2020-12-30T15:48:55Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@AaronPurpleRidout](https://discourse.nodered.org/u/AaronPurpleRidout)
#### Post date: [30 December 2020 15:48 UTC](https://discourse.nodered.org/t/nodered-pfc8574-addresses-too-restrictive-in-ui-settings/38289/1 "2020-12-30T15:48:56Z")
I am a noob tying to use [https://flows.nodered.org/node/nodered\_pfc8574](https://flows.nodered.org/node/nodered_pfc8574) to control 3 relay boards but the addresses are 0x14, 0x15, 0x16 not 0x38 & 0x39 that the UI settings allow to be set from the drop down combo box. Is it possible to edit the address in a text file somewhere outside node-red so that I can set the addresses I need? but also so I can have 3 off pcf8574chip nodes in the system?
Thanks,
Aaron
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### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [28 February 2021 15:49 UTC](https://discourse.nodered.org/t/nodered-pfc8574-addresses-too-restrictive-in-ui-settings/38289/2 "2021-02-28T15:49:02Z")
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