Large Power 4km Wireless Remote Control Transmitter Module Kit 433Mhz, 501 Original

RF 433Mhz Transmitter Module Kit for Arduino ARM Launch Distance 4000 Meters DC 9V RF 433Mhz Wireless Remote Control Transmitter Module Kit Large Power Specifications: Product Name:4000 meters wireless transmitter moduleSize: (L x W x H): 49 x 30 x 10mm/1.93 x 1.18 x 0.39inOperating current: >100mAWorking voltage: DC 9VWorking frequency: 433MHzLaunch distance: 4000m (open environment without interference)1 x 4km Wireless Transmitter Module