I have stored a number of items in my cart and I would appreciate some advice as to whether these are all compatible or if there are better alternatives available that would work with the main system.

I have a hybrid wired/wireless system with existing PIR's and magnetic contacts in place but I am expanding the system and finally installing the panel.

 

5 x - Honeywell Four-button compact two-way keyfob
1 x - Honeywell Galaxy Flex 50 Panel with MK8 Keyprox
1 x - Microtech Galaxy MK8 Keyprox LCD Keypad
4 x - Honeywell Wireless Dualtec 15m x 18m Pet Immune
5 x - Honeywell Galaxy ASK Keyprox Proximity FOB
1 x - Honeywell Galaxy / Dimension Boxed Power Supply Unit
4 x - Honeywell Wireless Door/window compact magnetic contact
1 x - Honeywell Galaxy Dimension GPRS/IP Communications Module
1 x - Honeywell Galaxy Dimension Wall Tamper Switch
1 x - Honeywell Galaxy Flex Direct mount RF Portal
1 x - Yuasa NP10-6, 6v 10Ah Sealed Lead Acid Battery
1 x - Honeywell Indoor Siren Grade 2

I would also like an outdoor siren (wireless) - my apologies for not including the list before, I thought you might have been able to see it on the admin side of my account.

The 6v battery is wrong and I don't think the dimension tamper will fit a flex, but is required for grade 3 only. Wireless is currently grade 2.

There isn't a compatible wireless sounder.