4-Channel RF Lesion Generator with Monopolar Bipolar and Tripolar RF The Golead RFE4-B is a professional 4/8-channel multi-mode RF lesion generator designed for advanced interventional pain management and RF ablation procedures. This system integrates monopolar, bipolar and tripolar RF modes, together with thermal RF, pulsed RF, sensory stimulation, motor stimulation and real-time impedance monitoring, providing a versatile platform for professional RF procedures. Manufacture