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Control shopping cart wheels with your phone (2021)
Headphone Warning: Please disconnect any headphones you might be wearing before playing the audio on this site. Control Shopping Cart Wheels With Your Phone! Choose your wheel below: About Play the below sounds through your phone speaker and hold it next to a Gatekeeper Systems wheels to lock/unlock.
Play the below sounds through your phone speaker and hold it next to a Gatekeeper Systems wheels to lock/unlock. Most electronic shopping cart wheels listen for a 7.8 kHz signal from an underground wire to know when to lock and unlock. A management remote can send a different signal at 7.8 kHz to the wheel to unlock it.
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