Electronic Shelf Label (M21Q-RW)
M21Q-RW
* Resolution: 250×122pixels - 69,3 x 35 x 12 mm
* 2.13 inch, with black/white/red & Yellow Four 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
