AMPLIFIER FOR GUIDING SYSTEM, HOUSING MATERIAL: ANODIZED ALUMINUM AND ELECTRIC COMPONENT, SPECIFICATIONS: POWER REQUIREMENTS: 102-132 OR 204-264 V AC, SWITCH SELECTABLE 50-60 HZ, 400 VA MAX, ACTUAL POWER OUTPUT: 300 WATTS CONTINUOUS, PULSE WIDTH MODULATED, POWER OUTPUT (TO DETECTORS): 15 V DC AT 150 MA, SIZE: 15” (381) L × 7” (177.8) W × 4-7/8” (123.8)H, WEIGHT: 16.1 LB