We are excited to share the user manuals for the Apex 300, Hub D1, Hub A1, and SolarX 4K. Feel free to check them out and download for setup, specifications, and other useful information. 
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Apex 300 - US spec
Apex 300 - EU/UK spec
Apex 300 - AU spec
Hub D1
Hub A1
SolarX 4K
Please note that the manual for the AT1 Distribution Box is still under revision and is expected to be released in June. Stay tuned for updates!
Great thanks for the UK/EU manual for the Apex.
Does the AT1 work with EP900s?
Do you know when it will be available? I have two sets of EP900s waiting to install. Id prefer to use the AT1 versus the older method.
@CurtisNolting76
Hi Curtis, Currently, AT1 is only available as part of a bundle in the Apex 300 Indiegogo campaign. If you would like to purchase it separately, please email crowdfunding@bluetti.com
@Sideeffect I have searched the document library, and there is only one manual for Hub A1 (showed above) in the backend. If there are any updates, I will let you know.
@BLUETTI Page 27 of the AT1 user manual says “not all microinverters are compatible with the AT1. Use the AC PV breaker to connect microinverters to the AT1. Some microinverters may not be fully compatible with BLUETTI systems, please contact BLUETTI support for details.” What microinverters are compatible? Specifically, I am looking at Emphase IQ8. There are several varieties. Are they all compatible?