if someone wants to they will, wires are easier to attack assuming there is access to them, if access then id prefer double pole as thats easier to defeat. Next is eol. I couldnt even start to defeat a wireless system and would go for attacking the comms
id still default wouldnt trust the outgoing firm as being any good, thats probably why its a takeover. Im sure you have seen spared of circuits on yours.
be better if you said what your trying to achieve there may be better ways. But 8 quid to protect your safe you may as well save the 8 quid and bury it in the garden under a 12 quid bird bath