Vacuum Detection/Moisture Alarm PCB Set ~ (incl. on/off switch and mount, buzzer, moisture sensor, CR2450 battery holder and 4 colour LED,1pcs Panasonic CR 2450 batteries incl.) Epic-W For the Sony a1

For the Sony a1

5x average magnification

PDF Manual

the meaning of the LED indicator in the housing:

This dual-activation offset vacuum valve supports creating a vacuum with either the hand pump or via a low pressure inflator

Vacuum Detection/Moisture Alarm PCB Set ~ (incl. on/off switch and mount, buzzer, moisture sensor, CR2450 battery holder and 4 colour LED,1pcs Panasonic CR 2450 batteries incl.) Epic-W For the Sony a1Nauticam is pleased to announce an exceptionally comprehensive vacuum system that allows the underwater photographer to confirm watertight integrity before entering the water. This system provides additional peace of mind with expensive camera equipment and should mean fewer lost dives due to minor equipment issues. The system is comprised of two parts, a one way vacuum valve and an electronic monitoring circuit. Monitoring Circuit The electronic