Features: Place the receiver Controllers on TV, sofa, window, etc., and control their lifting by Controllers. Compacts and portable size, easy to use and operate. Easy to install, with reverse connection guard, both ends can be directly connecting to use. Have wide transmission distance, 30m/98.43ft in open place, the receiver sticking to the ground or sticking to the metal surfaces will affect the reception distance. Make of ABS materials, which is strong and enduring, not easy to be damaged. Specifications: Materials: ABS Controllers Size: about 345x90x24mm/13.58x3.54x0.94inch Remote Control Size: about 95x40x16mm/3.74x1.57x0.63inch Frequency: 2.4G Distance: about 30m/98.43ft Package Includes: 1pc Remote Controllers 1pc Brackets 1pc Controllers note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to difference between different monitors, the picture may not reflect the actual color.