2, some lock cylinders can not be refueled, (very few) such as the mother beads lock core.

3, the door seam can not be too large, easy to be opened and shake the sound.

4, when the key is not easy to insert or withdraw, spray some light lubricating oil, (such as w40) oil that is not too strong will not move.

5. The anti-theft door has a lattice type, and the anti-theft wire is inserted into the oblique lock puller which is automatically locked, and the door is opened.

6, the lock core should not rain. Flushing, because there is a small spring inside which will rust and fail to be flexible.

7, do not use the key to open the door directly, the key to open the door lock, the lock does not return to the original directly pull the key to open the door, the lock will not be long after you will say goodbye to you.

8, the locomotive key does not have a large string, connected in series, when the locomotive is running, the key shaking and weight will wear the lock core, and the key will slide out for a long time.

9, automatic locks should be slightly tight, not too tight, the lock is easy to break.

Voltage Protector

We supply various types of voltage protector including TV Guard, Fridge Guard, Digital Voltage Protector etc.

The voltage protector is good for an automatic protection of the home appliances in case of under-voltage, ultra-voltage and electricity stoppage. For instance, it may be always harmful to the normal operation, cut their service life, or even burn down the compressor motors for air-conditioners, refrigerators and freezing cabinets if the supply voltage is too low or too high. Especially, instant power stoppage and restarting supply with the electricity net creates a strong voltage impact which is very hazardous and may damage the compressors. This protector applies a digifax technique, which can immediately disconnect the load supply and provide the compressor with a time-retardant power reconnection with a perfect result of protection for the compressor.

Voltage Protector, TV Guard, Fridge Guard, Digital Voltage Protector

NINGBO LONGFLIGHT INTELLIGENT TECHNOLOGY CO.,LTD , https://www.long-flight.com