The third generation of the 4401 Fiber Optic Adapter, Ikelite's Fiber-Optic Converter does everything that the previous models did, but features a hard anodized aluminum plug connection which reduces weight without sacrificing durability. It is recommended for use with any Ikelite strobe produced September 2018 or later with a hard anodized aluminum bulkhead.

The 4401.3 continues to be sensitive enough to work with internal electrical-to-optical LED flash triggers. These triggers are found in Sea & Sea and Nauticam housings, among others. The converter adapts the electrical bulkhead of any Ikelite DS strobe into a fiber-optic port.

Updated electronics make this converter capable of accurately reading the LED signals for fast and reliable triggering. Like the original Fiber Optic Adapter, it is also compatible with any system where the camera's built-in flash can be detected by a fiber-optic cable. The converter automatically configures itself for compatibility with both pre-flash and non pre-flash camera modes, so there's no setting of small switches or confusion over number of pre-flashes. Simply turn on your strobe and take one picture to configure.

This device is a non-TTL, manual exposure unit capable of supporting a single strobe. It works with Ikelite's DS50, DS51, DS125, DS160, and DS161 strobes. The converter features a depth rating of 295'.

Converts Bulkhead to Fiber-Optic Port    Third Generation of 4401 Adapter    Hard Anodized Aluminum Plug Connection    Use with 2018 & Later Ikelite Strobes    Higher Sensitivity for LED Triggers    Manual Exposure Only    For DS50/DS51/DS125/DS160/DS161 Strobes    Depth Rating: 295'

Hard anodized aluminum plug connection, compatible with any Ikelite strobe produced September 2018 or later with a hard anodized aluminum bulkhead

Converts the electrical bulkhead of any Ikelite DS strobe into a fiber-optic port.

Offers all the capabilities and functionality of the earlier 4401 Fiber Optic Adapter.

Features heightened sensitivity for use specifically with Sea & Sea, Nauticam, and other housings with internal electrical-to-optical LED flash triggers. These devices translate camera's electrical signals into a series of LED flashes, which are much dimmer than traditional built-in camera flash.

Updated electronics make this converter capable of accurately reading the LED signals for fast and reliable triggering.

Compatible with any system where the camera's built-in flash can be detected by a fiber-optic cable.

Automatically configures itself for compatibility with both pre-flash and non pre-flash camera modes, so there's no setting of small switches or confusion over number of pre-flashes. Simply turn on your strobe and take one picture to configure.

Non-TTL, manual exposure device capable of supporting a single strobe. The strobe's output may be adjusted using its built-in manual power settings.

Works with Ikelite's DS50, DS51, DS125, DS160, and DS161 strobes.

Compatible with the following fiber-optic cables: Ikelite Fiber Optic Coiled Cord # 4501, INON Optical D Cable "Non-wireless type" L-Connector, Sea & Sea Fiber Optic Cable (L-type) #50107, Sea & Sea Fiber Optic Cable II #50128, Olympus UW Fiber Optic Cable PTCB-E02, Nauticam Optical Fiber Cable # 26211 Nauticam to INON, Nauticam Optical Fiber Cable # 26212 Nauticam to Sea & Sea.

Related Questions and Answers

Q: 1. I currently have a 220 Acv thermostat, connected with only two wires, labeled A and C, that come from the heater apparently. Will I be able to easily replace that thermostat with this one? Thanks

A: It will work on any heating or central air system that uses a 24 volt controller. it will not work on any system that uses a controller that has 100 or 220 volts to control it. This is different from a system that is powered by 220 volts.

Q: 2. Display in Cels degree?

A: Yes you can change the settings in the app or on the unit to display C.

Q: 3. Where do I find the checklist to see if it will work with my central air and heat?

A: Go to the Nest website and click on support. Under the column for Nest click on Compatibility Check . You'll have to type the address as this Q&A section wouldn't all me to post a link. We love our Nest.

Q: 4. the 2 3G nest that I bought came without the heatlink that apparently is a must to connect a 3 zones heating system. What should I do? I couldn't find a separate heatlink to buy.

A: If you still need the Heatlink, I would recommend reaching out to Nest directly.

Q: 5. Does this come with different colors?

A: No I don't think so

Q: 6. Hi!. Can I use it in Chile? I know the App is available in the app store for iOS

A: I don't see why you couldn't. All you need is an Internet connection (wifi) and the app on your phone. The thermostat itself will need a 12v power connection at the mounting location in your home as well.

Q: 7. Where does s1 and s2 connect?

A: Do not use the red and white wires that are in S1/S2 on your old thermostat, these are external sensor wires and Nest gets the internal temperature reading from its ambient temperature sensors and the outside temperature from your Wi-Fi connection.

Q: 8. What happens when your internet is down? Can I control it manually?

A: If your internet goes down you will not be able to access it remotely. You can control manually on the unit itself.

Q: 9. Do these work on Android?

A: Yes, the Apple AirPods can also work with Android devices.

Q: 10. BATTERY REPLACEMENT FOR A GEN 3 MODEL?

A: We do not offer a replacement for the Built-In Rechargeable Battery for theGoogle Nest Learning Thermostat (3rd Generation, Copper) BH #NET3021US.