Which external Siren do I have?


Novice Member
Hi all, I have a wireless Visonic Powermaster 30 G2 system, all working well but I want to proactively change the external Siren Battery before it fails as it is around 3 years old. It is fitted just below the eaves of house roof but not easy access due to a smaller roof at first floor level. I want to order the correct battery before I attempt this as access may be tricky however I cannot tell whether the siren is an MCS 730 or an MCS 740, (batteries are different for each one). I can access the system with installer code but all it tells me is the Ser No Id of the siren, not which model it is. Anyone have any ideas, (the documents from when it was fitted do not specify model number)


Google is your friend.

The 740 replaced the 730 but needs:
PowerMaxPro versions 5.0.13 and up and 5.2.07 and up
PowerMaxComplete versions 1.1.06 and up and 1.5.00 and up
PowerMaxExpress version 1.0.01 and up

I suspect you have the 730 but you'll need to do some investigation to be sure.

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