Stainless Steel Digital LCD Heater includes an external control unit and are available with an analog or digital display. The external control unit and titanium shaft sets these heaters above the rest. And because there's no glass in these units, they are nearly half the size of other heaters, allowing you to place them in the aquarium, aquarium filter or sump.

Stainless Steel heating tube.
External temperature controller
Automatic protection mechanism activates when sensor wiring is disconnected or shorted.
Double water proof protection tube.
Very durable & reliable.
Fully submersible
Operating temperature range: 15°C to 36°C.
Heater probe and censor are controlled by micro computer with high precision of ±1°C
Ideal for large active fish

Features:

1. Unbreakable, submersible stainless steel heating tube.
2. Temperature control with digital reading display.(15°C - 36°C).
3. Easy setup. Reliable. Accurate.
4. Available in 300W/400/500W

MODEL：ST-300
VOLT：220/110V
FREQ：50/60Hz
POWER：300W

MODEL：ST-400
VOLT：220/110V
FREQ：50/60Hz
POWER：400W

MODEL：ST-500
VOLT：220/110V
FREQ：50/60Hz
POWER：500W