Envirosure Low Pressure Air Supply Alarm The Envirosure alarm is ideal for use on ponds where it is essential to know if your air pump system fails. The low cost alarm provides a sonorous buzzer if there is a pressure drop in the system.
The alarm incorporates an energy saving design for long service life and can be run by battery or mains supply. (Batteries and Adapter both supplied). Input : AC 100 - 250v 50/60Hz Output : DC8v 300mA