Sennheiser Single Channel Bodypack System: (1) SK 2000XP bodypack transmitter ; (1) EM 2000 single channel recevier. Frequency range Aw (516 / 558 MHz), 2000BP1-A | Affinitech Inc.
4 Way Lora AC Wireless Remote Control Switch Kit transmitter receiver – Remote Control Switches Online Store
MYE MWTD-S9 Digital Single Channel Transmitter
Teradek RT Single Channel Wireless Lens Control Kit
Shure GLXD14+/SM31FH Wireless headworn mic system with bodypack transmitter and single-channel receiver at Crutchfield
EYK IEM81 UHF Wireless In Ear Monitor System Single Channel 16 Frequencies Selecable Perfect for Singer Stage Performance DJ - AliExpress
MICWL D100 UHF Single Channel Wireless Microphone System Handheld Beltpack
Digital Counter Sensor for Commercial Door Open Sensor
Audix AP41SAX 40 Series Single-Channel Wireless Clip-on Instrument Mic Sys | Full Compass Systems
Amazon.com: Shure GLXD4+ Pro Digital Wireless Single Channel Receiver, Dual Band (operates in 2.4GHz and 5.8Hz), 100 ft Range - for use with GLX-D+ Dual Band Wireless Systems (Transmitter Sold Separately) :
eMylo Remote Control Switch DC 12V Wireless Momentary Switch 1 Channel Wireless Relay Transmitter with Receiver for Home Use - Amazon.com
Theos Single-Channel Digital Wireless System | Gotham Sound
Amazon.com: D Debra Audio PRO ER-102 UHF Single Channel Wireless in Ear Monitor System with Monitoring Type for Stage, Band, Recording Studio, Musicians, Monitoring (2 Bodypack with Transmitter) : Musical Instruments
Gemini UHF-01HL - Single Channel Headset Wireless Microphone System - Canal Sound & Light
Gem Sound GMW-1 Single-Channel Wireless Mic System | Music & Arts
DC 12V 10A Single Channel Relay RF Wireless Switch Kit, 315MHz Receiver with Remote Control Transmitter for Home: Amazon.com: Tools & Home Improvement
D Debra Audio PRO ER-102 UHF Single Channel, Wireless in Ear Monitor System (2 Receivers with Transmitter) - Walmart.com