Model No.:JB-303HD
Product Origin:China
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Description:Product Name: Video Door PhoneModel Number: JB-303HDPlace of Origin: ChinaFeatures: 1) Base technology parameter 2) Power: DC18V (supported by the indoor unit) 3) Wiring: 4 wires (if includes unlock components then 5 wires) 4) Current: a) Static state: 20mA b) Dynamic state: 160mA c) Communication time limit: 75 seconds d) Working temperature: -40°C ~ + 70°C