Apeks transmitter 

FEATURES & BENEFITS
The Apeks transmitter is to be used in conjunction with the DSX wrist computer, allow you to monitor current pressure and gas time remaining without a stiff high pressure hose, while providing a more streamlined profile.

Hoseless Gas Pressure Transmission for the DSX Once set, the transmitter is permanently paired and will not accidentally pair with other computers Battery is user changeable and commercially available Nitrox compatible up to 100%