◆ 主机和报警喇叭一体设计，安装更方便
◆ 主机超声焊接 + 点胶密封设计，防水性能更强
◆ Ultra low power consumption mode
◆ Design of waterproof silicon rubber ring for main engine
◆ The host computer and alarm horn are designed together, and the installation is more convenient
◆ Host ultrasonic welding + dispensing seal design, waterproof performance stronger
