Pa. A load-sensing damper has been designed for applications that require lowering a lightweight door, lid, or cover 30 to 40 degrees below the horizontal plane in a smooth, controlled motion. The damper converts linear motion into rotary motion using a helical shaft with mated helical guide. MPT fitting and is available in active lengths up to 125 in. The handgrip has a proportional trigger for index-finger operation. Up to seven three-position toggle switches are within easy reach of the operator's thumb for selecting functions and directions.
Power is supplied via four double A batteries, either alkaline or lithium.
The control weighs less than 1 kg and measures 11 by 8 by 20 cm. It is available in license-free frequencies of 433 MHz and, for international applications, of 2.4 GHz. Both offer a performance range from 4 to 185 cubic ft per minute and a horsepower range from .5 to 10 hp. They include a cooling shroud that lowers operating temperatures.