1.RF Encoder,RF recorder,PDA 2.Issue the open door cards through software ... ,RF Encoder,RF software,and the Energy saving switch,PDA. Motel RF card lock system,Software installed on the ... open the door and get power in the room,PDA to collect the open door cards. Motel IC card ... lock system :Hotel lock,open door card,Encoder,software,PDA,and the Energy saving switch. Working theorySoftware installed on ...