PGFUNNY Aquarium Heater more details:
★Information: *Please fully dive the heater for 10 minutes before using the betta heater to adapt to the water temperature in the fish tank. *The betta fish tank heater is completely sealed so please don't disassemble it, that will make it permanently damaged.
1. How to set the initial temperature? Press and hold the online button, the display flashes into the setting mode, lightly press the switch to accumulate and set the temperature, select the desired temperature value, and release the set temperature automatically after 5 seconds of release.
2. What does the LED screen display red light, E1, E2 mean? The red light indicates that the heater is working; E1 indicates that the water level is lower than the heater probe. Please immerse the heater 100% in the water again; E2 indicates that the temperature of the fish tank has reached the set temperature, and the heater stops working.
3. How to reset the heater temperature? Can be reset after power off.
Size selection: -> 50W/270g, suitable for containers less than 12 gallons -> 75W/310g, suitable for containers less than 20 gallons -> 100W/310g, suitable for containers less than 25 gallons -> 200W/360g, suitable for containers less than 50 gallons
★Functionality :★Material: ABS ★Waterproof: IP68★Rated operating voltage: 110V - 120V★Automatic constant temp:68℉ - 94℉ / 20℃ - 34 ℃ (±1℃)★Security protection systems: anti-scalding surface treatment, anti-explosion, anti-cracking★Specifications: Size: 4.9in x 2.5in x 1.2in / 12.5cm x 6.5cm x 3cm Package contents: 1*Betta fish heater mini