... hole: 16mm OEM, ODE available Professional manufacturer AD16 led signal lamp 24v 1. Model: AD116-16C Indicator light (pilot light)2 ... the areas of electric power, telecommunication, machinery, marine, textile, printing, mining etc.4. Technical ParametersLife of continuous working ≥ 30000hAllowable instantaneous voltage ... withstand voltage:2.5kVInsulation resistance:≥50MΩ AD16 led signal lamp 24v