Zoo Med Laboratories SZMRH20 40-Watt Repti Therm Habitat Heater Moisture proof Easy to use, clean 1-year limited warranty Zoo Med Laboratories Repti Therm Habitat Heater Industrial Strength Heater for Heavy Tortoises and other Large Reptile Cage Applications Automatic thermostat protection shuts-off heater at 119-DegreeF (48-DegreeC) to prevent over heating industrial Strength Heater for Heavy Tortoises and other Large Reptile Cage Applications Automatic thermostat protection shuts-off heater at 119F (48C) to prevent overheating