XBee Pro 63mW PCB Antena - Series 2B (ZigBee Mesh)

XBee 6.3mW Wire Antenna - Series 2C ZigBee Mesh

Replace all your Command Confusion with the Broadlink RM Mini 3 Universal Smart Home Wifi IR Remote Control with App and Professional Support, Compatible with Scene and Suspend Mode, Exceptional Hardware Configuration and Time function.

Special for garden lighting, this Transmitter and Receiver Kit with 2 Channels allows you to switch the lighting of your Garden in 2 different zones with the commands on and off.

We have no idea what USB device you are hooking up to, but if you want to access the microUSB port on something, you might want this.

SparkFun RFM69 Breakout 915MHz

SparkFun Infrared Control Kit

The SonoffRFR2 is a Sonoff version with an integrated 433MHz RF receiver module. This product can be used in conjunction with an RF remote control, which allows you to control appliances indoors.

Stem Shield for your Arduino, the Velleman.

These wireless receivers work with our 434MHz transmitters. They can easily fit on a breadboard and work well with microcontrollers to create a very simple wireless data connection. Since these are just the receivers, they will only work one way data communication, you would need two pairs to act as a transmitter / receiver pair.

Remote Control Compatible Garage 4 Channels Rolling Code (Water Resistant)

This is a fantastic find for SFE. A small, high-quality, quad-band, standard SMA terminated, cellular antenna.