Foster Transformer’s inherently limited Class 2 transformers are allegedly easier to install and operate since they require no external fusing and contain no internal current fuses. Designed for applications requiring a hard wired, externally mounted Class 2 power source, the transformers are designed to last the life of the systems they power. They are ideal for use with alarm systems, motion sensors, automated faucets and toilets, remote signaling, low voltage lighting, door openers, control systems, dispensing equipment, and commercial appliances. FOSTER TRANSFORMER, Cincinnati, OH. (800) 963-9799.