YWADhttps://www.cca.co.uk/image.php?filename=ywad.jpg&stockcode=YWAD&category=0007003c000a&width=1000&height=1000The limited service life of filament signal lamps often necessitates regular testing, as the indication of a defective lamp may not be immediately recognised. The YWAD lamp test module is a din rail mounted 11 way lamp test module, the extra input terminal "C" is the lamp test input. For more than 11 ways a number of units can be linked together via the "C" input terminal. The lamp test module uses very high voltage tolerant components, such as avalanche diodes. Avalanche diodes are especially suitable for withstanding high voltages.
The limited service life of filament signal lamps often necessitates regular testing, as the indication of a defective lamp may not be immediately recognised. The YWAD lamp test module is a din rail mounted 11 way lamp test module, the extra input terminal "C" is the lamp test input. For more than 11 ways a number of units can be linked together via the "C" input terminal. The lamp test module uses very high voltage tolerant components, such as avalanche diodes. Avalanche diodes are especially suitable for withstanding high voltages.
