YukiHalu Submersible Aquarium Heater, 10W/20W/30W Adjustable Mini Fish Tank Heater, External Temperature Controller, LED Temperature Display, Used for 0.5-1/2/3 Gallons (10 Watts (1 Gallon))

【10W mini heater, for 0.5-1 gallon】YukiHalu 10W mini aquarium heater is specially designed for the mini fish tanks lower than 1 gallon. The water temperature may also be appropriately adjusted from 64 to 93°F. The rated voltage: 100-130V.
【Super mini size】The heater only 6cm / 2.4inch long. Fits for super mini fish tank, easy to install and easy to hide.
【Automatic thermostat, 1°F accuracy】The heater adopts PID keep an eye on strategy, and the temperature fluctuation range may also be reduced to 1°F. The heating is robotically stopped when the set temperature is reached.
【Overheating protection】The power can be bring to an end and stop heating robotically if the heater overheating. Offer protection to your fish. Never cook your fish. 30days full refund, 12-months warranty.
【External Temperature Controller】Easy to set and read the temperature through external controller which has built-in temperature sensor, LED display and smart setting memory function. No wish to buy other aquarium temperature meter. The heater will take into account that the temperature setting, no wish to reset the temperature after power off.