When the sensor is not connected, please try the following steps: 1. Ensure the host and transmitter are within an unobstructed range of 100 meters. 2. After battery installation and power-on, the transmitter awaits 3 minutes to receive the host signal. 3. Force the long reception mode by pressing the alarm and CLR buttons simultaneously for 3 seconds. 4. If issues persist, replace the battery or restart the device.

If you cannot display the correct temperature, consider these solutions: 1. If you purchased two sets, reinstall the batteries separately in each set and ensure the display is normal before proceeding. 2. If there is a temperature mismatch between the devices, remove and reinstall the batteries.

Product Description: The freezer temperature alarm helps prevent food spoilage and keeps your food fresh and safe.

Note: - Do not disassemble the product freely. - If the display is blurring, please change the battery. - Do not place this product in hot, humid, dusty, or corrosive gas environments, as it may damage the electronic components. - The thermometer will not alarm immediately when the temperature exceeds the pre-set value. It will compare the temperature after 10 minutes, and then alarm immediately if the temperature reaches the alarm value.

If the sensor cannot be connected: - Ensure the host and transmitter are within a normal, obstacle-free range (up to 100 meters). - After powering on the host and transmitter, the transmitter will receive the host signal within 3 minutes. - You can also force the long reception mode by long-pressing the alarm + CLR button for 3 seconds. - Finally, you can replace the battery or restart the device.

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