Features a flood sensor with SentryPlus Alert technology to detect excessive water discharges from the relief valve;Requires purchase of activation kit to activate sensor;Integrates with the Sensor Control Monitor to deliver maintenance alerts to BAS via RS-485 Modbus or the Nexa platform by W-Fi connectivity;Bronze body;Tamper resistant bonnet screws;6 Inch coated thermostat length;Non-mechanical seat to disc alignment;Set pressure 150 psi