Includes a freeze sensor for use with SentryPlus Alert technology to signal facility personnel when temperature nears and reaches the freezing point;Available freeze sensor connection kit to activate a monitoring system that trigger alerts for low and freezing temperatures;Lead free construction;Modular compact design;Freeze alerts feature available with add-on connection kit for Wi-Fi networks, building management systems (BMS), and irrigation management systems (IMS);Replaceable seats and seat discs;Top entry