WiFi control: we can connect INKBIRD ITC-306A WiFi with mobile phones via WiFi and its free app， so any abnormal temperature will be alarmed on our mobile phones and we can monitor our aquarium temperature much easier and more efficiently

Better protection for aquarium creatures: equipped with 2 relays， 1 for output control and the other 1 for abnormal protection

Wide time setting range: its heating time range can be from 1-hour to 72-hours based on our needs and alarm will be trigged once the temperature or the heating occurs any abnormal situation within the set time range， its temperature setting range is 0.0°F to 45.0°C/32.0°F to 11°F and its measured temperature range is -minus 0° to 100°C/minus 40°C to 212°F

Dual probes design for more safety: its alarm will be triggered once the temperature difference of its 2 probes is over 5°F (3°C) and its APP on our mobile phone will pop up the alarm notification at the same time for more safety of our aquarium creatures