The classic 'half moon' version for the combined light and sightglass
Suits circular sightglass fittings style DIN28120 or similar
Nominal dia: DN 50 to DN 200
Operating Voltage: 24V or 120V AC or DC
Power, depending on size: Halogen filament lamp 20W, 50W or 100W
Standard product with momentary push button
Light fitting is attached to the sightport cover flange by two or four screws.
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