The module is for wireless communication of digital data.
The nRF24L01 is a highly integrated, ultra-low power (ULP) 2Mbps RF transceiver IC for the 2.4GHz ISM (Industrial, Scientific and Medical) band.
HC-05 Bluetooth Transceiver module is an easy to use Bluetooth SPP (Serial Port Protocol) module, designed for transparent wireless serial connection setup.
Long-Distance communication Receiver and Transmitter 433MHz antenna
NodeMcu WiFi DevelopNodeMCU is an IoT Module based on ESP8266 Wifi Module. NodeMCU uses Lua Scripting language and is an open source Internet of Things (IoT) platform.
HB100 Microwave Wireless Doppler Radar Detector Probe Sensor Module 10.525G
SI24R1 instead of nRF24L01+RFX2401C SI24R1+PA+LNA wireless communication modules with IPEX+SMA antenna shielding case 2.4GHz 20dbm 1000m