This is a Crawford RCU 433 2 K High Quality original de 2 Channel Remote Control Frequency: 433.92 MHz rolling code. it comes with an Instruction and Batteries. the The Remote Programming Procedure is very Easy and requires no special equipment. This Remote is compatible with the Gate Remote controls: Crawford ea433 2 km, Crawford ea433 2 KS, Crawford ea433 4 km, Crawford ea433 4 KS, Crawford ea433 4 K, Crawford RCU 433 2 K, Crawford RCU 433 4 K and Crawford n002800. It also compatible with the norma acero Remote controls Like: Acero norma ea433 2 km, Norma acero ea433 2 KS, Norma acero ea433 4 km, Norma acero ea433 4 KS, Norma acero ea433 4 K, Norma acero RCU 433 2 K, Norma acero RCU 433 4 K and norma acero inoxidable n002800. if you want to Increase The Remote Control Reception Range Up To 150 - 200 metros, then you can Connect This Aerial: https://www.amazon.de/dp/b01mtoyb0 F. if you have Any questions about your purchase please contact us.