External tetra aquarium tank heater

H2/H3 LED digital display :

• The digits on the display screen will flash for 3s just after powering on, and the current temperature set is displayed.
• Temperature setting; After pressing slightly the button on the line, the display screen will flash and enter the setting mode. Then the user can press the button to set the temperature (temperature range: 20-34 C (68-94’F)) needed and then release the button. After 5s, the temperature set will be saved automatically and the real-time water temperature in the fish tank will be displayed. When the heating rod detects that the water temperature is higher than the temperature set, the heating rod will stop working; when it is 2’C (4)F) lower than the temperature set, the red indicator will be on, the heating rod starts to heat the water and stop heating when it reaches the temperature set.
• H2/H3 LED digital display series and H3 have the over-temperature protection and water shortage protection function, respectively. When the water temperature is over 35 C (98 F), the heating rod stops the work and the display screen blink E2. When the water temperature is below 34 C (94″F), the fault disappear and it shows normal.For H3, when the water level is lower the top detector of the heating rod, the heating rod shows E1 and flashes to alarm. After the rod is fully submerged, the fault disappears and it shows normal.
• The product is equipped with a precise temperature probe, so temperature can be displayed precisely (+ 1’C(2°F)). When the external temperature used is more precise, the user should verify whether the meter is accurate and can choose diversified measurement.