1. In some construction emphasizing security purpose principally, the door handle should be U appearance, which tail bend to the door, it prevents the people from clothing is hooked by the handle when they are escaping in emergency, and prevent the children from hurt on head by the handle. These things often occur in straight handle, which is installed in the place of 100cm height of the door.

2. Batteries should be exchanged very easily, that wouldn¡¯t be a troubled sales services wasting abundant time. If the lock must be uninstalled for exchanging the batteries, it will not be a good lock.

3. To pay attention to the bottom of the front lock & back lock, check it whether it is lack of the soleplate for the jerry-build purpose. Damage may happen to the door when install the locks for the asymmetric pressure if there have no soleplate.

4. Is there any protection supply to the plugboard which is very sensitive to ambient condition. If the factory only aims to save the cost and can not give even a cover to protect the plugboard, it will be very dangerous. Short circuit will happen frequently in the rainy season for the door is affected with dampness. So far as now, some factories lay a piece of black pastern above the plugboard to conceal the above mentioned deadliness weakness, but it still can not occlude the plugboard. Furthermore, if the transaction is concluded on such condition, it will increase the clients cost to maintain the locks, because they have to replace the whole plugboard if there is any problem happen to the electron parts.

5. The possible damage happening on the IC card locks is on the IC card reader. Please check the reader if there is dustproof protection. The more small entry for the card on the front lock, the better is for the dustproof purpose.

6.Before purchase, please confirm whether adopts most reasonable and safest free rotation handle designing. Otherwise, handle would be always on real rotation, which would damage the mortice construction by handle power, results in greatly shortening lock working life, even causing unlock by violence.

Daily Maintenance:
Check the most important mechanical parts to see if the driver is apart from the mortice. Most of electronic locks work by mechanical driver. Most of mechanical parts are installed in the mortice. The mechanical parts are very easy to out of work for the rough work. To repair it you have to disconnect the cover of the mortice. It must disarrange all the parts in the mortice. The maintenance man of the hotel will be very difficult to install all the parts in mortice for lack of the practice and the relevant experience. the hotel's daily business will be lack of enough guarantee for such kind of inconvenience.