# \[APP\]\[Pro\] NetScan - Track devices on your local network using ARP and TCP checks

**URL:** https://community.homey.app/t/app-pro-netscan-track-devices-on-your-local-network-using-arp-and-tcp-checks/47454
**Category:** Apps
**Tags:** app
**Created:** [May 16, 2021, 9:00am UTC](https://community.homey.app/t/app-pro-netscan-track-devices-on-your-local-network-using-arp-and-tcp-checks/47454 "2021-05-16T09:00:48Z")
**Posts on this page:** 1
**Showing post:** 26

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### Author: ![Peter\_Kawa](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/peter_kawa/32/173848_2.png) [@Peter\_Kawa](https://community.homey.app/u/Peter_Kawa)
#### Post date: [May 26, 2021, 7:09pm UTC](https://community.homey.app/t/app-pro-netscan-track-devices-on-your-local-network-using-arp-and-tcp-checks/47454/26 "2021-05-26T19:09:29Z")

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I made a “IP device offline” indicator, while using a VD light with color capability.  
I put my IP devices in a dedicated zone, so I can use generic alarm detection.

- One or more devices alarm.on: vLight Red and ON
- All devices alarm.off: vLight Green and OFF

 ![Screenshot_20210526-210834_Homey](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/a/3/a30ca049683cde037f5efc09922029352e17766d.jpeg)

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