Megger dlro10hd dual power 10a low resistance ohmmeter megger 1000 348 the megger dlro10hd dual power low resistance ohmmeter combines simplicity of operation with a rugged ip65 case designed for stable ground and bench operation the unit is powered from either its internal rechargeable battery or line power making it suitable for continuous testing in production line repetitive use environments the rotary controls are simple and easy to operate in all weather conditions and whilst wearing