Here is an electronic doorbell that doubles as an infrared thermometer with Bluetooth to alert you to people coming to your place of business with fever. The OZS Bluetooth Thermometer Doorbell has a detection range of 2 to 6 inches. Its app lets you view historical data.
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This Bluetooth thermometer doesn’t require any contact. Its audible alarm and red light activate when temperature above 99.5F is detected.
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