Ankle Monitor Law and Legal Definition

An ankle monitor is a device that is required to be worn by offenders under house arrest. Some states may offer house arrest to offenders convicted of less serious crimes. The ankle monitor is an electronic device and it sends a radio frequency signal containing location and other information to a receiver. The device cannot be easily removed. Any tampering with the device can often trigger an alarm. If an offender moves outside of an allowed range, the police will be notified.