Motion detection is the process of detecting a change in position of an object relative to its surroundings or the change in the surroundings relative to an object wirelessly.
Wireless Movement Detector
HKC

HKC Wireless Dualtech Detector 15m
Honeywell

Honeywell Le Sucre Wireless Pet Immune PIR
Honeywell

Honeywell Le Sucre Wireless PIR with Built-in Colour Camera
Optex

Optex Battery operated 24m 180° Detector
Optex
Optex Battery Powered External PIR for use with Wireless systems
Optex

OPTEX BXS-RAM 24m Narrow Area Outdoor PIR Battery White
Optex

Optex FTN-RAM Compact Battery Operated Outdoor PIR
Optex

Optex

Optex Wireless masthead receiver with realy output
Pyronix

Pyronix Wireless 12m Digital PIR Detector
Texecom

Texecom Capture C15-W Wireless 15m Curtain PIR Detector
Texecom

Texecom Capture CQ-W Ceiling Quad Wireless