The GRI Child Resistant Pool Alarm is designed to operate with either a 9 volt battery or external DC power supply.
The surface and recessed models will operate at any DC voltage from 5 - 15 volts maximum.
The 12 volt DC power threshold is recommended to keep the audible volume of the alarm at its maximum level.
WARNING:NOT A LIFE SAVING DEVICE. It is to be used in conjunction with current safety equipment and procedures to prevent unwanted intrusions into unsupervised areas.