Functions: 
No software needed, set RFID key on the lock directly
Powered by 4pcs AA alkaline batteries, last 5-10months

Equipped with 6V external power interface
Single card or dual cards unlocking

Non-auto locked function optional

Database: 

Material: Zinc alloy
Color: Silver, Golden, etc 
Applicable door thickness:15~25mm 
Working voltage: 6V (4pcs AA alkaline batteries)
Battery life: 5-10 months, more than 15, 000 times normal continuous opening
Card type: token, key tag, card, wristband
Card frenquency: 125KHz by default, 13.56MHz optional
Low voltage alarm: <4.8V, still can open about100 times
Application: school, SPA center, swimming pool, gym, golf course, supermarket