MegaPulse Antenna Surge including the 4M ohm load resistor required by IEC 60065. Designed specifically for testing to IEC 60065 Fig. 7, IEC 60950 Annex N and IEC 62368-1 Annex D. The IEC 60065, Fig. 7a, switch S is our IER design, designed and built in compliance with IEC 60065, Fig. 7b. External interlock is supplied as standard equipment.