CACAZI A9 Music Doorbell 300M Doorbell Transmitters + Receiver EU Plug/US Plug

Feature: 1. The product is easy to install. 2. The receiver work with AC 75-250V power source. 3. 300 metres operating range(in open area). 4. The transmitter use with a 12V 23A alkaline battery(not included). Specification: Brand name: CACAZI Model number: A9 1v3 Operating range: 3 00 metres(in open area) Ringtone: 52 pcs Volume: adjustable of 4 levels Transmitter size: 81 x 39 x 17mm Receiver size: 81 x 81 x 45mm Doorbell connection: Press the receiver volume key for 3 seconds, press the transmitter immediately. Disconnect: Press and hold the receiver volume key for 8-10 seconds Packing Included: 1 x Doorbell Transmitters 1 x Doorbell Receiver Detail Pictures: