smarttune sensors are designed to replace your existing turnscrews (forestay/backstay/shrouds/diagonals) and feed live load data to your phone wirelessly, or (with the addition of a Cyclops Marine Gateway) to most on-board electronics systems. smarttune is currently available in five sizes for use on boats from a wide variety of classes (sizes represent turnscrew measurements). 

• Easy install, simply swap out existing turnscrew body on your standing
  rigging.
• Size based on threaded stud diameter of the wire swage.
• Live load wirelessly communicated to your phone.
• Live load wirelessly communicated to your boat electronics via the Cyclops
  gateway.
• Data log and graph stored on phone and/or gateway.
• Multiple sensors can be read on one phone or gateway.
• Loadtalk enables the load to be heard in earphones whilst sailing, ideal for
  tuning runs.
• Precision designed for lowest weight, low windage.
• Open body for stud to stud calibration.
• Factory Calibrated and accurate to +/- 1% of maximum working load.
• Durable and waterproof beyond IP67.
• Powered by easy to source 2 x AAA batteries (approx. 6 months of battery
  life), spare batteries supplied with order.
• Factory set to 1Hz (fresh load reading per second)
• For display on a smartphone, recommended range of up to 15m while sailing (connect to on-board displays via Gateway for longer range).