Update on Jan 22, 2024.

The issue that 'the spotlight of Tapo C320WS V2 is permanently on' is solved on the official firmware v 1.0.10 Build 231102 Rel.66223n. 
If your Tapo C320WS V2 encounters such a phenomenon, please try to update the firmware to the latest one.
How to update the firmware of the Tapo&Kasa devices on the Tapo App?

Best Regards

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This Article Applies to:
Tapo C320WS V2

Issue Description/Phenomenon:
Generally, the spotlight on the Tapo C320WS will turn on automatically in the following scenarios:
Case 1. The spotlight turns on temporarily when the camera detects movement at night (dark environment) in Smart Mode (on the Night Mode Settings page).

Case 2. The spotlight turns on permanently when Full Color Mode is selected in the camera's Night Mode Settings page, and the camera selects Night Mode on the Live View page.

However, some customers may encounter the problem that regardless of whether Tapo C320WS has selected Auto, Day Mode, or Night Mode on the Live View page, and regardless of whether the camera has selected Infrared Mode, Full Color Mode, or Smart Mode in the Night Mode Settings, the spotlight of the C320WS V2 will stay on continuously, even in bright daylight.

Suggestion(Update on Oct 20, 2023):

Our developers have provided beta firmware to solve the spotlight stay ON issue, please help provide the following information via private message (send a message to @Solla-topee, make sure you've registered or logged in with your TP-Link ID in our community first) with the format  'Forum ID 616862+ Tapo C320WS V2 + The spotlight of Tapo C320WS V2 is permanently on', and I will send the firmware to your camera.

1) The MAC address of the Tapo C320WS.

2) [Optional] On the Tapo app>Live View page of the Tapo C320WS:
a) Check the camera selects AUTO, Day, or Night mode.
b) Check if the spotlight can be turned off manually by tapping the bulb icon,  and whether there is a countdown on the Live View page and the bulb is turned off after the timer expires. 

3) [Optional] The mode you select on the Tapo C320WS's Camera Settings>Night Mode Settings page.

4) [Optional] If you remove the microSD card from the camera, check if the spotlight will turn off.