The New High output 360º, single LED beacons are compact and powerful. Our 200ZL offers a polycarbonate lens clamped to a rugged die-­cast aluminum base with a fully gasket aluminum retaining ring to enhance water resistance. The 201ZL offers a polycarbonate, quick snap lens and base assembly for basic easy field repairs. The polycarbonate lens are always sealed to the base with a water resistant enhanced O­-ring. The 203MVL offers a twist on/off lens for quick field maintenance and a durable ABS plastic base with flange. The 204MV is a space saver.