This item differs from a regular HeartSine Adult Pad-Pak (PAD-PAK-03) in that: It has a thermal cut-out fuse It is made with fire-resistant plastics It has anti-vibration collars on the ECG contacts (to reduce noise in the ECG that you might get from the low amplitude-high frequency “drone” of a plane) It has anti-vibration seals on the battery contacts The Pad-Pak-07 is aviation approved and suitable for use in all HeartSine Models. It has a standard 4-year expiry.
