ITEM NAME:DIY Micro Frequency Binding Module DIY Accessory Description: Compatible Spektrum dsm2/ satellite receiver 5V USB power, No additional power required Micro and Portable Plug usb getting to binding mode Holding the button and usb plug getting to DSM2 binding mode Specification: Power support: 5V usb input Power output: 3.3v or 5v Interface: 1.5mm 3pin standard connector; 4pin 2mm solder pin Weight: 1.2g Size Chart: Size: approx. 21 x 14 x 6mm/0.83 x 0.55 x 0.24inch Package Includes: 1 Piece Bind Frequency Module Note: This is only a Bind module for Spektrum DSM2/ protocol satellite receiver SKU: DMO0015927261013784.1 Piece Bind Frequency Module. Micro and Portable. Interface: 1.5mm 3pin standard connector; 4pin 2mm solder pin. Power support: 5V usb input. Plug usb getting to binding mode. Holding the button and usb plug getting to DSM2 binding mode.