To further add to our forum post Hikvision Easy IP 4.0 vs Easy IP 3.0 vs Easy IP 2.0+. What is the difference? I wanted to explain the differences between the three technologies found within the Easy IP 4.0 range. Hikvision have expanded the Easy IP 4.0 range a great deal in the past year...
www.use-ip.co.uk
They will be exactly the same in terms of video/picture quality, the only hardware differences are the additional speaker and strobe light on the DS-2CD2346G2-ISU/SL.