*Classic model
*Highly cost-effective
*Brass escutcheon reinfored by a steel plate, satin brass finish
*Outside handle free to rotate preventing the mechanical parts from damage by attempts to unlock violently
*Original Japanese Mabuchi motor, five latches
*Dampproof PCB enables it to work fine even in humid places
*Improved low batteries indication limits unlocking in 50 times to lower the risk of theft.
*Battery box is located on the lateral to prevent the electrolyte from corrupting lock and its auto projecting structure simplifies replacing of batteries