Definition of «upon contact»

The phrase "upon contact" means when something happens or is experienced immediately after coming into physical or direct contact with another object, person, or substance. It refers to an immediate reaction that occurs as a result of touching or interacting with something else.

Usage examples

The security alarm is triggered upon contact with the entry door.
The sprinkler system activates upon contact with heat or smoke.
The phone screen automatically turns on upon contact with your ear during a call.
The car's airbags deploy upon contact with another vehicle or sudden impact.
The smart home lights turn on upon contact with the motion sensor.
The digital thermometer displays the temperature upon contact with the surface being measured.
The touchless hand sanitizer dispenser dispenses the sanitizer upon contact with your hand.
The vending machine releases the selected item upon contact with the designated button.
The self-cleaning robot starts cleaning the floor upon contact with the start button.
The automatic garage door closes upon contact with the safety sensors.

Sentences with «upon contact»

That was an intriguing idea, but it died almost immediately upon contact with legislative reality. (vox.com)
If you are very sensitive to the lactose or proteins in whey protein, you may find that the symptoms will develop almost immediately upon contact with the protein. (wellwisdom.com)
Not quite a straight lotion, not quite a gel - cream, this light moisturizer sinks into skin upon contact and plays well under makeup. (refinery29.com)
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