Low battery warning and emergency unlocking mode of fingerprint lock
Among smart home devices, smart door locks are loved by consumers because of their safety and convenience, among which fingerprint locks are the most common. But any electronic equipment has the problem of power consumption. When the fingerprint lock is in a low power state, how to deal with it? This paper will discuss in detail the low-power warning function of fingerprint lock and the emergency unlocking method.
First, the low power early warning mechanism
Under normal circumstances, most fingerprint locks in the market will have a built-in low battery warning system. When the battery power is lower than a predetermined value (usually 20% to 30%), an alarm signal will be sent by sound or LED lights to remind users to replace the battery. This early warning mechanism can help users to take countermeasures in advance and avoid the situation that they can't unlock due to sudden power failure.
Second, the conventional battery replacement steps
1. Turn off the power: First, turn off the power switch of the door lock to prevent the circuit from being short-circuited due to misoperation.
2. Open the panel: use a screwdriver to remove the lock housing and find the location where the battery is installed.
3. Replace the new battery: insert the new alkaline or lithium battery correctly according to the positive and negative signs, and be careful not to install it in the opposite direction.
4. Restart the test: Install the rear cover, power it on again for trial inspection to ensure that all functions work normally.
Third, the emergency unlocking scheme
If you forget to replace the battery and the door lock is completely dead, you can take the following ways to carry out emergency unlocking:
1. Spare key: Most manufacturers will provide a spare mechanical key in the product package as an opening tool in case of emergency. Just insert it into the keyhole and rotate it several times to open the door.
2. Mobile charging treasure power supply: Some high-end brands support USB interface directly connected to mobile power supply to unlock, just need to prepare a standard Micro USB or Type C data cable and a fully charged small portable charger to easily solve the problem outside the door!
3. Password input/credit card sensing: Some models also have a variety of authentication modes, such as password disk and RFID card. Even if there is no power, these backup means can easily complete identity authentication and successfully enter the door.
In a word, as long as the existing resources and skills are used reasonably, you don't have to worry too much even if you encounter low power problems. However, in order to ensure the smoothness and safety of daily use, it is recommended that you check the power display regularly and replace the battery in time!
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