WCAU March 22, 2018 6:34 am Recall: Smoke Alarms Have Issues Detecting Smoke Kidde is recalling more than 450,000 Duel Sensor Smoke Alarms after a manufacturing fault may have made them ineffective. US & World Videos 0:35 Fans of ‘The Office' got to see some of the stars at Fan Expo Philadelphia on Saturday 2:32 Rainy, chilly weather didn't stop many from enjoying festivals throughout Philadelphia 0:29 Driver found safe after carjacking in Delaware 2:23 Teen killed in quadruple shooting in North Philadelphia on Saturday evening 0:39 Teen shot near church in West Philly, two in custody