the next generation of Spektrum remote receivers are here.featuring a user friendly antenna setup that allows for the antenna to be placed in 2 positions, making installation into those tight projects easier than ever. Fully compatible with dims and DSM2 transmitters . use these to add more receiving points on any Spektrum receiver that has 1 or more remote receiver ports.The remote receiver includes one 24-inch extension however, various lengths of receiver extensions can be purchased separately, allowing various placement options for mounting purposes. Additional remote receiver extensions are available in 6", 9", 12", 24" And 36" Lengths (All sold separately). dsmx remote receivers must be used with a DSMX main receiverkey featurescase design offers better strain relief on antenna leadsmx with DSM2 backward compatibility 22ms and 11Ms compatibleupgrade for any Spektrum receiver with available remote receiver portsGreat addition to AR636, AR7350, AR9350, telemetry receivers and power Safe receiversIncludes 24 inch extensionincludes:dsmx remote receiver with 2-way position able antenna