... telephone, 3) Unlock module, 4) Frequency: 1.8G, 1.9G Wireless doorbell with DECT,CL-3624 Technical Specifications1. CE (EMC LVD TBR6)2. Standard ... C size alkaline batteries Features1,Support all DECT phone features2,Use the handset to talk with outdoor station3,Use the handset to ... unlock the door (optional)4,Waterproof with IP 655,Full hands-free speaker6,High quality sound7,High ...