Q. How big is it?
A. Here is the DS-1 pictured next to the familiar VR3. The DS-1 is 72mm diameter (2-13/16") and 36mm in depth (1-7/16").

Q. Any chance of a picture of the HUD and connector block?
A. Here is a picture of the HUD mounted to the KISS mouthpiece using the included stainless steel bracket.

Q. Are you going to be building your own oxygen sensor holder to fit the Classic KISS?
A. Yes, the Classic KISS version uses a new replacement kidney block which contains the isolation circuitry and
connectors for the main display and the optional HUD and VR3 cable. The following photos show the unit fitted to a
Classic KISS. The original hat then fits back on top. Both the old style machined hat, and the newer injection
moulded hat can be used. There is no size increase in the rebreather with the addition of our Kidney.

Q. Can I use my existing kidney block and wire your display and HUD into it?
A. It is possible that you may be able to wire it up somehow yourself, but by far the easiest solution is to use the
Subsea Systems replacement kidney block. The replacement kidney block contains the circuitry required to isolate
each component of the system, so if you want to use the HUD and/or VR3 cable, you need the replacement kidney.
If you choose to go your own way, we can not advise you how to do it or give circuitry information.

Q. What about redundancy?
A. When using either the replacement kidney on the Classic KISS, or the Expansion Block on the Sport KISS,
P-Port, and Homebuilders systems, each of these units has isolation circuitry inside that protects the two PPO2
outlets from each other. So, if you have a DS-1 plugged in to one port and a VR3 plugged in to the other, a
failure of either device or it's cable will not affect the readings on the other device. For example, if your DS-1
cable is cut and shorted by seawater, the VR3 will still give you good readings from one cell. Conversely, if it's
the VR3 cable that is damaged, the DS-1 will continue to give THREE good readings. If you are worried about
only being left with one sensor if the DS-1 cable is damaged, you can even use TWO DS-1's, one in the main port,
the other in the VR3 port, thereby having redundancy on ALL THREE sensors.

Q. Is it possible to have the computer link sealed off to allow me to add one at a later date, but use the new kidney
without computer to start with?
A. Yes, blanking plugs are supplied so you can use one, two, or three outlets. If you know you will NEVER want to
use the HUD and/or VR3 port, either or both of these can be deleted at the time of order and the price reduced
accordingly. If you choose to do this, the ports can NOT be added later.

Q. Will there be a Sport KISS version with the cell holder?
A. The Sport KISS version has an external connector block which wires into the existing Left Pod.

Q. Is it possible to get the HUD option for the Sport KISS?
A. Yes, the Sport KISS version is exactly the same as the Classic except for the cell holder/kidney block.

Q. Can I just buy the HUD?
A. Yes by all means. It won't work though, it needs the DS-1 digital display to drive it.

Q. Do you have a manual you can send me? Can I download the manual from the website?
A. No. The full printed manual will be supplied with every product purchased. The website and this FAQ supply
sufficient information otherwise.

Q. Can the cable be routed into the left/right/top/bottom?
A. The cable can come in from the right or left side, not the top or bottom.

Q. Can this be moved by the end user or is this set when you order?
A. This must be specified before purchase. The user can not change the cable entry.

Q. Where is and what type of button(s) are used to control the display?
A. There is one button, inside the case, that is used for all calibration and settings. There are no external switches.
The photo below shows the access port to the calibration button.

Q. What triggers the auto on/off?
A. The On/Off works on PPO2 levels.

Q. How does the back light work?
A. The backlight is set to either 'On' or 'Off' in the settings menu. Whenever the unit is active, that setting will be used.

Q. What type of battery does it use? Where is it? How do you change it?
A. The battery is 1/2AA Lithium, 3.6 volts. It is widely available, and user replaceable. It is fitted inside the digital display.
The following pictures show the display with the rear cover removed. The rear cover is removed by undoing four screws.
The battery can then be easily changed. You can see the battery, and above it, the calibration/menu pushbutton.

Q. What is the battery life with the light on as opposed to off?
A. The battery life is as follows:
Approx, at 20 degrees C. (68 F.)
Standby - 15 months
Operating with Backlight Off - 700 hours
Operating with Backlight On - 180 hours

Approx, at 3 degrees C. (37 F.)
Operating with Backlight Off - 400 hours
Operating with Backlight On - 100 hours

Q. Can you tell me the color/light scheme for the HUD?
A. A green flash every three seconds means GOOD, indicating the PPO2 is between setpoint minus 0.05 and setpoint
plus 0.1. A short red flash every four seconds means LOW, indicating the PPO2 is below setpoint minus 0.10, and a
double red flash every four seconds means HIGH, indicating that the PPO2 is higher than setpoint plus 0.1. Whenever
the red LED flashes, you should immediately check the digital display. Green = GOOD, Red = Check your display.
Click here for more information about the HUD.

Q. I don't like your HUD pattern, can you make mine blink six times every full moon and twice on Pancake Day?
A. No. Unless you are buying 25 units, we will not be customising display patterns.

Q. How do I change the setpoint?
A. The setpoint is variable between 0.7 and 1.4 and is changed in the calibration menu.

Q. What is the depth rating? Surely the plastic gland is no good?
A. The unit has been repeatedly tested in a wet pressure chamber down to it's fail depth. Fail depth is between 600
and 650 metres (1950 - 2150 ft). At this point the cable gland gives way and the unit floods. Yes, the plastic glands
are good. Based on this testing, we give this unit a rating of 100 metres. If you REALLY want a metal cable gland, for
an additional sum we will fit one for you.

Q. In the event of a case flood will the HUD or VR3/computer still function?
A. If the digital display floods, the HUD will no longer function. Whatever you have plugged in to the third port, be it
VR3, HS Explorer, or another DS-1 display, will still be operational.

Q. Could it be run on one sensor in CCR?
A. The unit CAN run on one, two, or three oxygen sensors. However, we recommend you ALWAYS use three
operational oxygen sensors.

Q. Does the VR3 connect to a single cell or off the voted output like the HUD?
A. The VR3 (or VR2, HS Explorer) runs from one sensor. This will continue to operate if the main unit fails. For total
redundancy of three sensors, you will need to fit either a second DS-1 Digital Display to the third connector (VR3 connector).

Q. Is it possible to get a secondary display as opposed to the heads up?
A. You can add a second (redundant) DS-1 Digital Display on the VR3 port. This leaves the HUD port available for a
HUD if required.

Q. My VR3 has a 2 pin connector, can I still use it?
A. Yes, 2 pin and 7 pin VR3/VR2 cables are available. The 2 pin cable can also be used on the HS Explorer.

Q. I already have a VR3 cable, can I just use that one?
A. No, there is a connector on the new kidney (or block) which the new VR3 cable plugs in to.

Q. I have a VR3 connected to one of the cells and would like to keep it that way, but have all the three readings on
the display. Is this possible with your setup?
A. Yes, the DS-1 Digital Display shows all three cells, and the VR3 output comes from one of these as well.

Q. Will it work with R22D cells or does it require high output ones like to Mk15?
A. The unit runs off Teledyne R22, R17, or K1-D oxygen sensors. If you are using a Mk15/15.5/16 rebreather, you will
need to buy the Digital Secondary from Colkan International. If you are using a PRISM rebreather, you need the PRISM
version.

Q. I can only get 96% oxygen, how do I calibrate?
A. The unit can be calibrated using gases with between 80% and 100% oxygen.

Q. Can I use it for diving at altitude?
A. Yes. The manual shows how to calibrate using a lower percentage of oxygen, allowing for calibration at altitudes
of up to 1800 metres (6000ft).

Q. Do you make a setpoint controller?
A. There is no setpoint controller available at the moment, but it may be offered in the future. The architecture of the
system allows for additional items to be integrated at a later date.

Q. How many holes do I need to drill in my homebuilt rebreather to add your displays?
A. One. A 16 x 1.5mm threaded hole is needed for the connector. Your sensors wire to the back of the connector,
and the DS-1 plugs into the front. The optional block has the three connectors for Digital Displays/HUD/VR3 etc.
The following photo shows the basic homebuilders connector fitted with a 20cm loom and gold Molex sensor connectors.

Q. Can you send me a drawing of the circuitry so I can save some bucks trying to make my own connections/HUD/VR3 cable?
A. No.

Q. How much is xxxx ?
A. All current prices are available on the website on the prices page.

Q. How much is freight to xxxx ?
A. Freight prices are available on the website on the prices page.

Q. How do I pay?
A. Payment can be made direct to my Bank Account, or via Paypal. Contact me for details.

Q. Will you send it as a 'gift' so I don't have to pay duty at my end?
A. No. Duties and customs fees are the responsibility of the purchaser.

Q. I want to be your distributor, what is my price?
A. We ARE NOT looking for distributors. Please DO NOT ASK.

Q. I'm an instructor, what is my price?
A. Instructors pay the same as everyone else.