Compact 50W Mini Aquarium Heater. Suitable for aquariums ranging from 40-150L for versatile use. Why Choose Our Mini Aquarium Heater?. Remote Monitoring & Voice Alarm: With a suite of self-protection features, the heater will automatically turn off in case of dry running or when the water temperature exceeds 36℃ (96℉), notifying you instantly via smartphone alarm.
eBay