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Please use the drop down menu above to select which housing connector you need based on the brand housing you own.
To use this product you will need to replace one control Dial / Lever on your housing (not a button).
Select one of these controls that you don't use to install the V4. If there is another control or button close by (within 16mm of the control you are replacing) that will interfere with the bulkhead choose the "Long" version, otherwise choose the "Short" version.
"In Bulkhead" refers to the silver strobe bulkhead that comes installed on the DSLR housing. If you have the hotshoe connector piece installed you will have to remove that first. Click on the thumbnails below to see this type of bulkhead.
"Empty Bulkhead Replacement" refers to any additional bulkhead on the S&S housing that does not have the silver strobe fitting. This bulkhead is usually just covered with a flat cap that is secured to the housing with a C-Clip. The C-Clip can be challenging to remove without the proper tool, so make sure you can remove it prior to ordering this version. Click on the thumbnail below to see this type of bulkhead.
This new, improved version of Leak Sentinel features a new, calibrated pressure sensor and processor. The complete electronic circuit and the battery are located in the robust anodized aluminum valve body for convenient operation and ease of installaton.
The green/red LEDs are visible through the transparent acrylic window, so no complicated installation around the viewfinder in non-transparent housings is required. LEDs are always visible, not only when you look through the viewfinder.
The included hand pump is lightweight and requires no batteries, so no nasty surprises when you are far from the coast. It achieves required underpressure in an average sized housing almost effortlessly.
The installation is simple and straightforward, and is in most cases done by either replacing the bulkhead, or just screwing the adapter into the accessory port. You can check the tightness immediately after installation, making the process risk-free.
Custom adapters for various housings/bulkheads are available.
The circuit is self calibrating, and as such suitable for altitude diving.
Temperature compensation prevents false alarms, and overnight function makes it possible to set the housing beforehand, then switch the circuit off and keep on monitoring later without repeating the process, thus saving the battery and time before the dive.
The housing is closed 15-30 minutes before dive, with the camera installed and the circuit switched on. Red LED starts blinking, indicating ambient pressure. The hand pump is fitted to the threaded valve body and the air is pumped out of the housing, After approx. 20-25 strokes, the red LED stops blinking, and after a couple more strokes, the green LED starts blinking, indicating the sufficient underpressure. The additional stroke or two ensures that the circuit is not on the edge of treshold. The pump is then removed and the protective cap replaced to ensure air and water tightness. The LED is then observed. Green LED blinking indicates that there is no air leakage (safe to dive). After the dive, the protective cap is removed and the pressure is equalised with the simple movement of the rubber valve.
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