November 25, 2015 8:48 pm NBC10 Investigators Put Smoke Detectors to the Test NBC10 Investigator Mitch Blacher turns up the heat on some common types of home smoke detectors to the test to see which make the cut — and how fast they’ll alert you to a fire. US & World Videos 1:44 Pro-Palestinian protesters remain on UPenn's campus despite warnings to disband 1:30 Protests calling for ceasefire continue at Penn 6:33 Family affair: Former Eagle and new Eagle Jeremiah Trotter and Jeremiah Trotter Jr. speak out 0:20 Teen girl shot in Southwest Philly, suspect in custody 0:27 FBI inspects American Airlines plane at PHL after bomb threat
