RF Remote Control Module Set 315/433

Discription of product: 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 module Size: (L x W x H): 49 x 30 x 10mm/1.93 x 1.18 x 0.39in Operating current: >100mA Working voltage: DC 9V Working frequency: 433MHz Launch distance: 4000m (open environment without interference)