Best Seller | UNIVERSAL SECURITY INSTRUMENTS MIC1509S Universal Smoke Sensing Technology, Smoke Alarm, Battery Location Sealed, Battery Locking Pin Yes, Battery Size 9V, Detector Type Smoke/CO Detector, Includes Dust Cover, Power Source Hardwired, Sensor Type Ionization, Photoelectric, Visual Alert Type LED, Volume Level 85 dB @ 10 ft,... ... more UNIVERSAL SECURITY INSTRUMENTS MIC1509S Universal Smoke Sensing Technology, Smoke Alarm, Battery Location Sealed, Battery Locking Pin Yes, Battery Size 9V, Detector Type Smoke/CO Detector, Includes Dust Cover, Power Source Hardwired, Sensor Type Ionization, Photoelectric, Visual Alert Type LED, Volume Level 85 dB @ 10 ft,... | | $48.89 go to store |