Recently, some netizens complained on Weibo that "a small rice lock is like a man's heart. When the outdoor temperature is lower than minus 25 degrees Celsius, the smart door lock will fail. This extremely cold weather is really terrible recently." Through the Weibo video, I saw

2025/05/1509:57:35 home 1297

Recently, some netizens complained on Weibo that "the lock of a certain meter is like a man's heart. When the outdoor temperature is lower than minus 25 degrees, the smart door lock will fail. This extremely cold weather is really terrible recently." Through the Weibo video, I saw that the smart door lock at the blogger's home could not open the door. Even if the blogger used a hot water bag to "heat" the smart door lock, it still couldn't relieve it.

So, the question is, are all smart door locks unable to withstand the test of minus 25 degrees? In fact, it is not the case.

The main reason for this problem is the smart lock motor. The smart lock motor is a small power micro electric motor. The main transmission structure is an reducer integrated and assembled by the transmission motor and gear box (reducer). It has the functions of reducing speed, increasing load capacity and driving.

fully automatic fingerprint lock motors are commonly used for small-power miniature reducers with power below 50W, voltage below 24V, and specifications below 38mm. In order to better meet market demand, the motor custom technical parameter service is usually used. For example, the technical parameters of the transmission motor, such as the structure type, output speed, output power, rated voltage, diameter specifications, etc., the gearbox reduction transmission ratio, output torque, transmission accuracy, transmission noise, output speed, etc. are customized and developed;

Because smart locks often have to be out of the north, usually if the grease is not selected well, it is easy to cause problems such as starting difficulties, large current, and heavy load. At this time, in addition to the original product structure design, the choice of lubricant is very critical.

BX-434 Series Multi-purpose low-temperature anti-wear grease is made of high-quality imported synthetic oil using composite thickener and a variety of functional additives are added to purify it. It has good adhesion and lubrication performance, and is widely used in noise reduction and lubrication of plastic and metal gear bearings of various household appliances, door handles, slide rails, instruments, electronic products, and small and medium-power motors. has long life and excellent lubricating and noise reduction performance in a wide temperature range of -50~220℃. It has fully passed the relevant testing and certification and meets the requirements of Meng Environmental Protection ROHS standard and REACH standard.

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