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

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

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.

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.

SparkFun Infrared Control Kit

SparkFun RFM69 Breakout 915MHz

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.

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.

XBee 6.3mW Wire Antenna - Series 2C ZigBee Mesh