The indicator light of the transmitter will normally show a red light after installing the batteries and will blink every minute or so to represent that it is transmitting a signal to the host computer.

The normal order of installing batteries is: first the host, then the transmitter.

When powered up, the sensor's red light blinks once per minute. Turn on the host first, then the sensor. If the first connection fails, wait for the next blink to reconnect or use the CLEAR key to reset. If multiple attempts fail, reset by removing and reinstalling the sensor batteries.

Freezer temperature alarm prevent your food spoilage & keep food refresh & safe

While the indication is blurring, please change the battery.

1. Don’t put this product in the place where it is hot, humid, dusty or full of corrosive gas, in case that its electronic components are damaged.
2. It will not alarm at once when temperature exceeds pre-set. It will compare the temperature after 10 minutes. And when temperature reaches alarm value, the thermometer will alarm immediately.
3. If the sensor cannot be connected?

• Please ensure that the host and transmitter normal obstacle-free (100m will be received normally); Please note that the host transmitter installed on the battery after power on, the transmitter will receive the host signal within 3 minutes

NOTE：

The transmitter won't connect and won't display properly:

1. Check the transmitter red indicator. If initial pairing fails, wait for the red light flash and retry. Long-press CLEAR to reset pairing. Connection works when red light is on.
2. If display still fails after multiple tries, remove and reinstall the transmitter battery. A lit red light means pairing is available.

Wrong temperature display:

1. Two sets of the product (4 transmitters total) may cause signal interference and mixed readings. Install batteries one set at a time; start the second set only after the first displays correctly.
2. For mismatched readings between main unit and transmitters: remove and reinstall all batteries to reset display order

About the alarm problem:

• Set alarm temperature AND turn on the alarm function. The alarm icon on screen means it is enabled. Short-press the alarm button to show the icon; alarm activates automatically after setup.