Description: KIDDE PPE120CA Smoke Alarm - 120VAC Hardwire w/ battery back-up. Photoelectric. Pi2040ACA OR Pi2040CA.
suggested replacement is 20SAR-CA (21031486). new unit is 120V HW w/ battery back up. if using existing housing of the PPE120CA, must also purchase part # 21032239 KIDDE PIGTAIL ADAPTOR
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