These are the few add-ons that I've recently acquired:
1) Dosing Pumps
2) Wireless Attachment
3) RF Expansion module (Controls my MP10 and Radion--which I plan to add-on )
4) Salinity Hub w/ Probe
honestly speaking the 1st Generation RA controller isnt very stable but after 2 years alot of improvement has been made to the controller i dare say that now the controller is very stable and easy to use. When i say easy to use means that the Reef Angel has developed a software (RA Wizard) that makes customizing the controller a breeze!
The Wireless Attachment is definitely a must to acquire!!! it allows me to monitor and control my reef wireless at any part of my home! for instance when i wake up in the morning i usually will go to my tank which is in another room to check if everything is ok is there a drastic PH Swing ? temperature too high or too cold? salinity spike? (in case i forgotten to top up my DI water attached to my dosing pump for water top off) or dosing pump faulty etc......... now when i feel lazy i will just check my galaxy note and when i hit refresh using the RA App wala! immediately i have the parameters at my fingertips. also i can choose to switch off or on any any ports this is very useful for example when i see that the room temperature is getting a little to high i will just hit port 7 on which is attached to a fan!
i also like the fact that i can tuck away the controller away form the danger of water splashes! one bad point is that this is not splash proof. when doing water change i will just hit water change mode which switches off my dosing pumps, lights and also wavemakers! Currently waiting for my relay expansion pack to arrived so i can plug in and control another 16 ports!( Up to 8 relay expansion modules can be connected simultaneously, for a total of 72 individually controlled sockets! that is if you need that much LOL)
Did i mention that i can monitor my params and also control the ports when iam away from home even overseas! when my temperature hits 29 my lights will automatically go off and the controller will send me an email or sms then i can decide if i need to switch off other ports if necessary.
i am still trying to figure out how to best configure it to fully ultilise the potential of the controller and also make reefing easier! The folks using this controller loves it and they are constantly giving feedback and dreams list to make the controller better for us reefers!
Thats all for now will update when the next shipment comes in.
Cheers