Kidde Worry-Free AC/DC Smoke/CO Combo Alarm (Ionization)

For 10 years of worry-free protection against fire and CO, this hardwired alarm comes with a sealed lithium battery backup. And it features a voice warning and intelligent sensor technology. There's also a test/hush button that reduces nuisance alarms. Another standard feature is peak level memory, which alerts users that the unit has detected CO concentrations of 100 ppm or higher. 120 VAC.
NOTE: Cannot ship to AK, HI, PR, or Catalina.