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The handset had seven connecting lines for recording resistance of tissue impedus sensor, temperature sensor and energy conductor and urethral and rectal temperature sensor.

Tissue conductor reads resistance of the tissue in ohm and gives reference to microchips set into the energy source. The tissue in the prostate has resistance from 80 to 200, which gives guidelines for starting the energy source. The soft tissue like urethra, bladder or rectal tissue has these resistance less than 60 ohms. There is arrangement into the microchips that if these needles (electrodes) are deployed into tissue which has resistance less than 80 ohms, the energy source would not start. Same way if tissue resistance is more than 500 ohms the computerized energy source would not start. There is rod lens which is 50 cm long as 0 degree viewing axis and its hub consists of fibro optic and irrigation channel. Fibro optic bright light visualize very clearly site of deployment of needles. These needles are covered with Teflon sheaths, which protect prostatic urethra and creates lesion only inside prostate tissue. The size of handset is much smaller than regular diameter of the urethra. The cystoscopic sheath is always passed under vision inside prostatic urethra and no force is used. The handset has arrangement on the body to adjust length of needle and sheath.