Suddenly, DiPietro's monitors detected a big surge in heart rate.

These monitors are highly sensitive and can detect amounts of radiation in trillionths of a Curie.

Circuit breakers disconnect a power line when monitors detect an overload.

If the monitor detects frequent contractions, that could be a sign she is in early labor.

Recently our monitors have detected unusually high levels of cosmic radiation.

Then on Saturday afternoon, the monitors detected that the foal was showing a slow and irregular heartbeat.

A monitor detected some low level skin contamination and also some contamination on the person's personal clothing, which were effectively dealt with.

But the monitors detect only anthrax, which sickened postal workers in 2001.

My own monitors in the asteroid belt easily detected it but there was no indication of a double punch-in.

The monitor had not yet detected the Caroljoy, or an immediate transmission would have gone out.