====== Electronic Whistle Issue Detect =======

==== Device Connection ====

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==== Issue Detect ====

If the game time fails to stop when the whistle blows at the start of the game, perform the following analysis:

**1. Check the indicator light on the electronic whistle receiver**

The red indicator light flashes in standby mode.

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When the whistle blows and the receiver successfully picks up the signal, the middle indicator light will briefly turn blue, then off, and return to flashing red.

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**2. Check the electronic whistle communication host**

When the electronic whistle receiver communication host is turned off, the LCD screen displays as follows:

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When the electronic whistle receiver communication host is turned on, the LCD screen shows the battery level of the electronic whistle receiver.

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When the whistle blows, the LCD screen briefly displays the received signal strength. After 2–3 seconds, it returns to showing the battery level of the electronic whistle receiver.

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**3. Check the [[https://www.kazovision.com/sports/ultrascore/|Ultra Score]] interface**

When the electronic whistle communication host is successfully connected to the KS‑MONSTER, an electronic whistle icon will appear in the lower‑left corner of the software.

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