By the looks of it you have a faulty one. Raise a ticket tomorrow for a replacement. If needed drop me a message ill authorise an advanced replacement.
Pic shows a TS790.Star Keypad, which may be connected to any of the TS Networker panels
IIRC the square keypads haven't been made for 18 yrs & its replacement the netstar has'nt been made for about 10 yrs,
There isn't any 2nd hand ones or new old stock currently on ebay,