Waterproof (IP67) 500 Watts to 1500 Watts, 1" NPT threaded, 5.5 inch to 7 inch long SSTL element w/ pilot light, and adjustment dial immersion heater designed to provide an easy solution for those seeking a controlled heat source for quick sterilization in laboratories, as well as a control method for general lab liquids. The model 305 comes standard with a 1" NPT threaded collar for permanent through-the-side installation.

• Power Rating: 500W, 1100W. or 1500W. at 115 or 230 V.A.C. (Choose Wattage Below ↓)
• Supplied with a standard length 6' 3-wire cord set.
• Differential: ± 1°F in a circulated bath.
• 5.5" inch heater element length for 1100 Watt unit
• 7" inch heater element length for 1500 Watt unit.
• Polished 316 SST'L Probe, heater element sheath, & switch cover. 
• Protected internal sensing probe prevents mechanical damage.
• "Pilot light" indicator shows "ON" when unit is heating.
• MET Listed: Listing# E212620