◆ 主机、报警和语音双喇叭一体设计，安装更方便
◆ 主机超声焊接 + 点胶密封设计，防水性能更强 ◆ 具备 MA-7Y 产品语音特质
◆ Host, alarm and voice dual speakers design, installation is more convenient
◆ Host ultrasonic welding + dispensing seal design, waterproof performance stronger
◆ Have MA-7Y product speech quality