Immersion Heater 4824 Immersion Heater Print 4824 Immersion Heater The immersion heater with dial temperature controller has a sensitivity of ±1°F when liquid is stirred. Top-mounted pilot light indicates that heater is ON. Heater features a plastic grip handle, 3/8" over the side hanger, 6' (182cm) 120VAC power cord; maximum temperature 212°F (100°C). M306-02: Immersion heater with temperature controller; 5.5" (139mm) long heated area, 500W. A421: Heater controller with four stainless immersion heating elements (through wall type, tank’s bottom). Request for information