Many have put timers on other EVSEs. It really depends on how the EVSE acts on power up. Some, at least OpenEVSE can have the timer built in., My OpenEVSE has a timer built in but since Anaheim has no tiers I do not use it. It really helps in PG&E or Edison lands to charge in the middle of the night for cheap rates. If you have tiers a timer is a good thing.
The way OpenEVSE works is that it opens a window for charging. The defaults are 5 min after midnight and 5 min before 7AM. Most cars will finish well before 7AM. T%he settings are adjustable but most use the defaults.
2012 Cayenne Red SL traded for:
2013 Pearl White SL Premium
Traded for a Cirrus White 2014 Mercedes B (totaled)
2016 Urano Gray eGolf SEL w/ drive assist
Loved the VW but it sat too low for my old body
Back to a Cirrus White 2017 B250e