... is a standalone fingerprint door lock, reasonable price with good performance, designed specially in the purpose of popularizing the fingerprint products. ... Working mode Unlocked mode Size Weight Power supply Warranty of period Temperature and humidity Applications Description100 Optical fingerprint scanning, ... .8 KG, Gross Weight : 5.5kg DC6V, 4 units of 1.5 alkaline batteries 24 months -5 to 50, 20 ...