Wireless Remote Control Electronic Rim Lock Motor lock AA Battery q

Notice:not include the battery, you need to Prepare 4* AA Battery
This lock is not waterproof! Item needs to be waterproofed when installed outdoors.
Technical specifications:
Size: 130*100*44mm (excluding the knob).
Wireless Frequency: 433MHZ
Remote control Distance: 0-50 meters (depending on the environment)
Battery life: 4piece AA battery can be standby for more than 12 months (according to the alarm of lock).
Low Power Reminding: a buzzer alarm per 20 seconds.
Reserve Battery Power: the battery level is too low, unlocked automatically, and no longer locked.
External Power: DC 5V, Micro US8 interface(Only interface not include adapter).
Standby Current: 20uA
Motor Ctarting Current: 200mA
Working Environment: -20°~ +60°, humidity 10% ~ 90% (no frost, no ice)
Registered Remote Handle Quantity: 20 (item will automatically cover the earliest registered handle when more than 20)
Shall not be installed in high temperature and flammable objects in place (such as near the gas station, fuel or chemical products), otherwise it will become the security risks and not working properly;
Shall not be installed in the vicinity of strong magnetic interference, strong radiation source, otherwise it will cause no locks phenomenon;
Shall not be installed in public places avoid to switch the lock too frequently. Otherwise it will cause a decline in the lock body structure service life.