ACI's 400 series wireless remote control is fully programmable. 400 series remotes are frequently used to control: monorail trains, electric chain hoists with motorized trolleys, bridge cranes and jib cranes. The 2 speed model 4004 and 3 motion one speed model 4006 feature positive detent positions, E-stop switches, and removable keys This remote control system comes with 2 remotes and 1 receiver. Standard Features include:Models with 4 or 6 Push-Buttons.Transmitter Specifications: L x W X H: 6.42" x 1.93" x 1.77" (163 x 49 x 45 mm)Transmitter Weight: 0.55 lbs. (0.3 kg) with two (2) AA size batteriesReceiver Specifications: L x W X H: 6.34" x 2.91" x 2.05" (161 x 74 x 52 mm)Receiver Weight: 2.43 lbs (1.1 kg) without cableOperating Range: Up to 328 feet (100 meters)Operating Temperature: -45 degrees C (-49 degrees F) to 80 degrees C (176 degrees F)