Electronic Shelf Label (M21-RW)
M21Q-RW
Resolution: 250×122pixels
2.13 inch, with black/white/red three colors display
Long standby Low power operation when no update
Commodity field management can be edited and modified
Supports power sampling function, alarm when low power)
Battery life can be up to 5 years without frequent replacement
Supports three-color independent control lights, flashing frequency is 1 time/second
