Techko S187D Safe Pool Area Entry Detector is designed to sound its high output alarm 110 - 115 dB when children or animals open the protected door or gate more than 1/2". To reset the alarm after the protection of the alarm has been tripped press the BYPASS button. When properly installed, the BYPASS button allows entry or exit through the protected door for adults without sounding the alarm. So make sure the BYPASS button is installed at an appropriate height out of the reach of children. The alarm will reset in 8 - 12 seconds and then resume protection, so make sure the door gets closed behind you.

Requires one 9V Battery for operation.