YukiHalu Small Submersible Aquarium Heater,

CAUTIONS
1, The device will have to be used under rated voltage 100-130V.
2, The heater will have to be fully submersed into the water. The external temperature controller will have to be kept away from the water as it’s not waterproof.
3, When there is moss or other dirty on the heater surface and the LED screen, it must be cleaned up with soft brush in time.
4, Disconnect power socket and wait for 15 minutes before changing water or remove heater.
5, Place the heater in the way of water float and don’t bury it.

Automatic constant the water temperature. How it works?
1, Press the ‘SET’ button to adjust the temperature. Press once, the temperature will increase 1°F, Press the button several times until the target value is reached. Temperature may also be correctly adjusted from 64 to 93°F
2, No operation for 3 seconds, the setting is confirmed to be activated
3, The heater starts heating. Red indicator lights on
4, Stop heating automatically when the setting temperature reached. Green indicator lights on.
5, Automatic constant temperature with 1℉ accuracy. The heater works in variable frequency mode based on PID regulate strategy

Out of water protection / Overheating protection. Never cook your fish
E1: out of water protection.
H1: Overheating protection.
Other codes: replace a new kit.

Indicator lights
Green: Constant Temperature / Red: heating

Parameters
Voltage: 100~130V
The aquarium volume:
* super mini 100W： 20 Gallon
* super mini 150W: below 30 Gallons
* super mini 200W: below 40 Gallons
* super mini 300W: below 60 Gallons
Temperature Range: 18~34 °C / 64~93 ℉
Temperature Accuracy: 0.5 °C / 1 ℉
Power Cord length：4.2Ft
1×heater with external controller, 1×user manual, 2×suction cup (above 100W) or 1x suction cup (below 100W)

300Watt for 30-60 Gallons: YukiHalu 300W aquarium heater is designed for 30-60 gallons fish tank. Temperature may also be correctly adjusted from 64 to 93°F. This heater works well in both saltwater and freshwater. Rated voltage 100-130V
Compact Size: only 23cm/9 inches for 300W heater. Fits mini fish tank, it takes up less space and easy to hide in the tank
Automatic Thermostat at 1°F Accuracy: The heater’s working frequency will be changed according to temperature variation based on Intelligent Frequency Conversion Technology, and the heating is automatically stopped when the set temperature is reached
Overheating and Lack of Water Protection: Stop heating automatically if the fish tank lack of water or overheating. Never cook your fish
Built-in Temperature Sensor, Power-off Memory Function: The water temperature will be displayed on the external temperature controller in real time. No want to buy other aquarium temperature meter. The heater will remember that the temperature setting, no want to reset the temperature after power off
Daily Maintenance: The suction cups will have to be cleaned each and every month to prevent the heater from falling off and breaking because the suction force is weakened by stains