# Sensor trigger camera issue

**URL:** https://discourse.nodered.org/t/sensor-trigger-camera-issue/11567
**Category:** General
**Created:** [26 May 2019 19:02 UTC](https://discourse.nodered.org/t/sensor-trigger-camera-issue/11567 "2019-05-26T19:02:54Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![mshaz](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/mshaz/32/2294_2.png) [@mshaz](https://discourse.nodered.org/u/mshaz)
#### Post date: [26 May 2019 19:02 UTC](https://discourse.nodered.org/t/sensor-trigger-camera-issue/11567/1 "2019-05-26T19:02:54Z")

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Hi

I need help , I have a sensor that triggers camera when value is high but since i get the data by polling every few seconds, it will keep on triggering the camera while sensors are high state. I only want to trigger once then when sensor value is low i would like to capture photo again

![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/2X/4/4077d236a0786c5bed37adf348b988126bd4aa1b.png)

Thank you

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### Author: ![moebius](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/moebius/32/2872_2.png) [@moebius](https://discourse.nodered.org/u/moebius)
#### Post date: [26 May 2019 19:13 UTC](https://discourse.nodered.org/t/sensor-trigger-camera-issue/11567/2 "2019-05-26T19:13:53Z")

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use the rbe node

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### Author: ![mshaz](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/mshaz/32/2294_2.png) [@mshaz](https://discourse.nodered.org/u/mshaz)
#### Post date: [1 June 2019 21:29 UTC](https://discourse.nodered.org/t/sensor-trigger-camera-issue/11567/3 "2019-06-01T21:29:53Z")

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Thank you @moebius . It works now. 😊