... be used outside, storage capacity is 500 users Features of WM-3000M1 access control:Stand-alone modeVandal resistant for harsh environmentAble to be ... : 12VNo batteryCard compliance: TM cardLong life performance with 20 years of cardFrom outside open the door to enterFrom inside open the ... : 180gApplication Field:residential estate, hotel, school, building, office, etc. waterproof access control