The FLYSKY FS-RM005 is an FHSS 2.4GHz radio module for Mini-Z. By using this module in combination with transmitters such as the Noble NB4 and T4PM+, you can operate various Mini-Z RWD/AWD/FWD/Buggy/4x4 ready-set series with KT-531P transmitters, and Mini-Z EVO series (MR-03EVO/MA-030EVO) combined with the Mini-Z EVO receiver unit (No. 82041), which were previously inoperable. You need to insert this module into the grip slot of the Noble NB4, download the compatible firmware (Ver. 2.0.97), and update the transmitter. When using firmware (Ver. 2.0.97) in combination with the Mini-Z EVO receiver unit (No. 82151-03), you need to update the receiver on the transmitter side. Please update the receiver according to the following procedure. - Brand: FLYSKY - Model: FS-RM005 - Type: FHSS 2.4GHz Module - Compatibility: Mini-Z Thank you for viewing.