... : very competitive price range. 2. Best quality: manufactory supply, stable with fast after-sale service 3.Quick shipping: For 100 ... (qty = 5:1 (cards:locks)-----To open the lock and insert to the switch to get power. 5.Data collector ... , free of charge)----For setting the program the whole system. management system : includes software,lock,encoder,smart card,date acquisition ,energy-saving switch ...