Hi,Dear
The maximum distance of signal reciever is 30 m in the house and 100 m outdoors.
When the transmitter module transmits an order, encoding and decoding are needed so that the order can be received by the receiver module.
But both tansmitter module and receiver module need Arduino boards repectively. Your receiver module can be connected to LED, by using transmitter module to control receiver module, it can function as a swtich.
Best Regards
Jacket