Find professional lock installation in Eastwood NSW

My door knob is an old model so it is hard to change the door knob. If possible i want the door knob be replaced with a lock. But if difficult, i plan to put a lock outside my door.

to provide solution and install a simple internal door

Main entrance old door locker is not able to lock probably and need to replace a new locker soon.

Installation of door handle

Need professionals to do the job Please tell me the brand and model of the lock you use. Photos of existing lock attached As you can see the handle already very long so I prefer something not too long( maybe a round or oval shaped smart lock )

Replace existing mortise lock with a Samsung DP609 smart lock. The door meets the dimension requirements shown here but may require further drilling. Some advice here would be great. The backset on the existing lock is 65mm but this new lock requires 70mm. Existing mortise plate is 170mm, longer than the new one but I think we can use a longer plate. Please advise if it is an issue. I will buy the Samsung lock when the job is booked. https://www.digitaldoorlocks.com.au/products/samsung-smart-wifi-doorlock-shp-dp609 - Due date: Before Sunday, 22 January 2023

I have the new lock (see pics) The old lock partly removed (2 screws too tight for me to remove - see pic) Can you remove the old lock and install the new sliding door lock Thanks - Due date: Before Sunday, 27 March 2022

Please help me install the lock for slidingdoor. The lock was already bought. - Due date: Needs to be done on Monday, 21 March 2022

install new digtal lock, remove the existing door lock handle can be removed if needed