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              MRB 4.2 Inch Electronic Price Display Labeling4.2 inch HS420 Dot Matrix EPD Graphic Screen Cloud-managed Pricing in Seconds 5-year Battery Strategic Pricing Bluetooth LE 5.0 
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              MRB 4.2 Inch Pricer Electronic Shelf Label4.2 inch HA420 Dot Matrix EPD Graphic Screen Cloud-managed Pricing in Seconds 5-year Battery Strategic Pricing Bluetooth LE 5.0 
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              MRB e ink price tag HL420E-ink price tag Size: 4.2” Wireless connection: radio Frequency subG 433mhz Battery life: around 5 years, replaceable battery Protocol, API and SDK available, Can be integrated to POS system ESL Label size from 1.54” to 11.6” or customized Base station detection range up to 50 meters Support collor: Black, White, RED and Yellow Standalone software and network Software Pre-formatted templates for the fast input 
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              4.2 inch Waterproof ESL Price Label SystemWireless communication frequency: 2.4G E-ink screen display size for Waterproof ESL Price Label System: 4.2” Screen effective display area size: 84.8mm(H)×63.6mm(V) Outline size: 99.16mm(H)×89.16mm(V)×12.3mm(D) Communication Distance: Within 30m (open distance: 50m) E-paper screen display color: Black/ white/ red Battery: CR2450*3 IP67 Waterproof Grade Battery life: Refresh 4 times a day, no less than 5 years Free API, easy integtation with POS/ ERP system 
