SPECIFICATION:

ESL Size:	4.2 inch Active ESL
Model No:	ESL-420B
Description	4.20 Inch Active ESL
Effective Display Region:	84.8×63.6(mm)
Resolution:	400(H)×300(V)Pixel
Physical Dimension:	105×98×14(mm)
Battery Type:	CR2450x4PCS
Operating Voltage:	3V
Working Current:	5uA(On standby) 6.5mA(Peak value)
Weight:	98g
Display Material:	EPD
Viewing Angle (degree):	180
Communication:	Two-way
Protocol:	Own Protocol
Working Frequency:	433MHz/2.4GHz(Bluetooth as an option)
Modulation Mode:	PRBS9
RF Power Default:	10dBm (adjustable)
Receiving Sensitivity:	-96dbm (adjustable)
Conflict Proof:	Unique Address Identification
Communication Distance:	20 meters
Data Update:	PC,Smartphone or Long-range Control
Working Temperature:	.-0-40 centigrade(Special requirement, can be - 20  - 40centigrade)
Storage Temperature:	.-0-45 centigrade
Storage Humidity:	5%~95%
Battery Life:	10 years
Working Time:	More than 5 years (it depends on the working frequency)
Applicable Scene:	Shelves, hooks
Display Color:	black-white-red(Three colors display) OR black-white (Two colors display)
Waterproof Level:	Waterproof, dustproof, moisture-proof