For iPhone 15 Pro Max Transparent Acrylic Airbag Shockproof Phone Protective Case with Lanyard(Yellow Rainbow) Filter-VoIP Gateway The sensor light source is

The sensor light source is infrared LED (invisible light)

This Lets you to Carry it to your Backpack

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0-10 meters long-distance standby trigger

Stronger Output: The maximum output of the SL60IID and SL60IIBi at 1 meter with standard reflectors is 18

For iPhone 15 Pro Max Transparent Acrylic Airbag Shockproof Phone Protective Case with Lanyard(Yellow Rainbow) Filter-VoIP Gateway The sensor light source is1. The case precisely fits for your phone. 2. Simple, comfortable, easy to carry. 3. It adequately protects devices from the normal scratches, dirt, tear and wear. 4. All buttons and ports are easy to access. 5. With lanyard, easy to use. Note: The actual product is subject to the title model, the model machine of the picture is only for effect reference