its a 2 channel board, so you need to hook them up differently to utilize the Night Time spectrum. You need to hook up a controller to use them independent. Emerson is the combination of 660nm and 730Nm. Night is just the 730nm
the puck, is just NightTime, but you can use it during the day if you wish, although weak for Emerson effect on a growth scale.
I use the Puck, does what it does. Hooked to a sonoff to time control it. Love it. but may get the Board down the road, I really like the chilled board.