Controller Features: Heavy duty heat, Overload protection, External Temperature sensor, Computer precision +/- 1 degree F, Safety shutoff at 95 degrees F, Easy to adjust temperature, Connect with any brand heater.
| Model No. | Recommended Aquarium | Watts | Volt/HZ |
| HC-300 | 120-180 gallons | 300 | 115/60 |
| HC-500 | over 180 gallons | 500 | 115/60 |