AC 900 Watt Transformer 900 Watt Low Voltage Transformer Outdoor MultiTapTSR900 900w Transformer Instruction Manual This is the 900 Watt Low Voltage Transformer you're looking for; 3x300w multi tap. The TSR900 is a heavy duty 900 Watt stainless steel manual transformer that's energy efficient, safe, reliable and multi tap output 900 Watt Transformer. With this low voltage step down power supply, you can convert national standard 120 volt input to 12v, 13v, 14v, or 15 volt multi outputs. It is ready for photocell and plug