Air Pump Hailea CPA-120 Stay calm even during power failure! Air Pump Hailea was designed to protect aquariums from effects of the power outage. A microcomputer switches the machine to battery circuit operation immediately after disconnection from the power supply. The unit can work up to 8 hours on battery power supply. The CPA-120 pump is intended to increase oxygen level in big aquariums, breeding water tanks and aquariums in pet stores. Produced especially for owners of big water tanks. silent operation - a multi-level silencer is used in the pump to ensure the quietest possible operation works even without electricity - during a power failure or during transport of the aquarium, the pump will operate for up to 8 hours intelligent switching between DC and AC - the microcomputer built inside the pump detects changes in power supply to connect the battery at the right time easy to use - thanks to full automation of the current switching, the pump does not require any additional handling The operation of the pump can be easily checked using the indicator panel which signals 3 processes (power, pump operation and battery charging). This allows you to control the operation of the device in real time. Hailea’s latest generation pump technology ensures safe operation, adjustable air outlet and quiet operation. Bet on safe and easy use to make sure your water tank is well oxygenated