... 4) Frequency: 1.8G, 1.9G Wireless doorbell with DECT,CL-3624 Technical Specifications1. CE (EMC LVD ... (Input: AC110~230V +/-10%, 50-60Hz)Outdoor station: 2 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 ...