Hoisting equipment uses a system of pulleys and chains or rope to lift and transport heavy loads. Electric hoists are commonly used in industrial fabrication settings and smaller machine shops. They use an electrical motor to lift heavy loads with the push of a button. Air chain hoists have high lifting speeds and are powered by compressed air for applications where electricity is either unavailable or not suitable for the task. Manual hoists are portable, lightweight, and require low headroom. They allow a single person to lift loads with no need for motors or a power supply of any kind. Radio remote controls and accessories enhance and maintain hoist functioning.