Zareba 6 Joule
It is AC-powered, low-impedance, 6-joule output at 75 ohms; 10.9 stored joules, 115 volt, and 60-cycle, pulsed output (1-second intervals). It has digital timing and a no fuse requirement design. The fence lamp flashes when operating. The unit is contained in a vented, weather-resistant nonconductive cabinet and includes Storm Guard lightning protection.
They are made in the USA and carry a 3-year warranty!