USB HID 8 Button RF Transmitter KeyFob.
Frequency: 418MHz
Distance: 1000 feet
Event Mapping#: 1-8
Address: 16,777,216 (2^24)
Dimension: 2.23"x1.37"x0.45"

RX KeyFob DataSheet
Applications: Controls, Process Equipment, Automated Processes, Medical Equipment, Gaming, Special Needs