# MQTT read every x topics?
**URL:** https://discourse.nodered.org/t/mqtt-read-every-x-topics/26558
**Category:** General
**Created:** [12 May 2020 22:01 UTC](https://discourse.nodered.org/t/mqtt-read-every-x-topics/26558 "2020-05-12T22:01:21Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@droidblast](https://discourse.nodered.org/u/droidblast)
#### Post date: [12 May 2020 22:01 UTC](https://discourse.nodered.org/t/mqtt-read-every-x-topics/26558/1 "2020-05-12T22:01:21Z")
Build up a ESP32 to read my power with a CT clamp from code off Github. It measures power reading every sec. Building a flow with Node Red but rather than read every 1 sec topic how can I read only say every 1hr, 12hrs and 24hrs? I been able to work out how to do this from the ESP. Any advice would be appreciated.
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### Author:  [@bakman2](https://discourse.nodered.org/u/bakman2)
#### Post date: [13 May 2020 05:39 UTC](https://discourse.nodered.org/t/mqtt-read-every-x-topics/26558/2 "2020-05-13T05:39:21Z")
Use a delay node, set it to 'rate limit' and check the 'drop immediate messages'.
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### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [12 July 2020 05:39 UTC](https://discourse.nodered.org/t/mqtt-read-every-x-topics/26558/3 "2020-07-12T05:39:24Z")
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