SHP-DP609 Smart Lock Battery Issues

[SHP-DP609]

My SHP-DP609 smart lock notified me that the batteries need changing. They take AA batteries and I swapped them all over (8 batteries) using 3 different brands of brand new batteries which I bought from the store. None of them work and the whole unit just seems to be dead. 
I checked I had put in the batteries the right way of course and even wiped, dusted and blew the connecting parts in case there was something wrong there. The original batteries which were almost dead too don’t work anymore. There doesn’t appear to be any battery leakage either. 
For some reason, I can’t seem to work out where the hard keys fit into to this lock either! 

No luck - please help! #SHP-DP609 #smasungsmartlock #samsung @samsung

[PS-1971]

What type of battery is recommended for Samsung DP609 ? Is rechargeable battery sustainable instead of the Panasonic batteries which is quite costly in long term usage. 

[Bluetulip]

I had this issue too. Changed batteries and then whole unit looked to be dead. Found inserting small metal probe into hole on outside of door and depressing the button worked.  Door lock all good again.

[Tony2708]

I tried your method putting a pin into the hole to reboot but it still used up the batteries far too quickly. It only take 6-7 days until the batteries goes dead. I use the good quality alkaline Energizer.