390MHz 4000m RF Remote Wireless Transmitter Module PCB Board Receiver Kit, 501 Original

Features: This product is a high-power signal transmission module, plug-in can be launched, the launch distance in the open environment is 4km, very suitable for DIY wireless product enthusiasts to use.Specifications:Size (L*W*H): 49*30*10mm/1.93*1.18*0.39\"Material: PCBWeight: 10g/pcsWorking Current (mA): > 100mAWorking Voltage (V): DC9VWorking frequency: 390MHzLaunch distance: 4000m (open and undisturbed environment)Notes:1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!2. Please allow slight measuring deviation due to manual measurement.1/2/3 X Wireless Transmitter Module