---
title: What do the lights on the Wireless Transfer Module(WTM) mean?
description: There is an indicator light on the WTM that can convey a range of information.
---

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1. [Help Center](https://help.revl.com/en/knowledge?hsLang=en)
2. [WTM Troubleshooting](https://help.revl.com/en/knowledge/wtm-troubleshooting?hsLang=en)
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# What do the lights on the Wireless Transfer Module(WTM) mean?

## There is an indicator light on the WTM that can convey a range of information.

1. ***LED indicator*** 
     1. ORANGE - booting up
     2. BLINKING GREEN - ready for RFID scan
     3. SOLID GREEN - RFID has been scanned
     4. FLASHING BLUE - WTM is preparing the video for upload
     5. SOLID BLUE - Uploading video from the cart to the server
     6. SOLID RED - WTM unit has encountered an unrecoverable error. See [WTM troubleshooting](https://help.revl.com/en/knowledge/wtm-basic-troubleshooting?hsLang=en)

1. ***Beeps*** 
     1. Cycling red - blue - green : demonstrates LEDs working - 1 beep to indicate unit working / on
     2. From orange to blinking green - 1 beep to indicate its ready

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