Is this the same as kidde model rf-sm-acdc? the kidde web site doesn't list any model rf-sm-ac.

The rf-sm-ac is the hard wired model with battery backup, the rf-sm-dc is the battery powered unit which is not hard wired.

How to make the order since i need the installation of three kidde ac hardwired wireless interconnect smoke alarms in my house on different floors?

I have one hardwired and two battery powered. I just followed the instructions and it all worked out. easy.

Can this smoke detector be used in an unheated garage? We live in an area where it gets below zero at times in the winter.

The unit is not designed for temperatures below 60F or above 100F.

Can hardwired work to other hardwired ?

This RF-SM-ACDC alarm will interconnect wirelessly to other RF-SM-ACDC alarms and will interconnect through a 3 wired circuit to other Kidde hardwired alarms.

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Description

🔥 Stay ahead of danger with Kidde — because your peace of mind can’t wait! ⚡

SMART IONIZATION SENSING - Detects invisible flaming fire particles faster than standard alarms for early warning.
TRUSTED SAFETY ASSURANCE - UL Certified with a 10-year limited warranty, meeting top fire safety standards nationwide.
UNINTERRUPTED PROTECTION - Hardwired 120V power with 9V battery backup ensures safety even during power outages.
SEAMLESS HOME WIDE ALERTS - Interconnects wirelessly with up to 24 Kidde alarms for instant, synchronized fire warnings.
EFFORTLESS INSTALLATION MAINTENANCE - Twist-off mounting and universal adapters make setup and battery replacement a breeze.

The Kidde RF-SM-ACDC is a hardwired smoke detector featuring ionization sensing technology for rapid detection of flaming fires. It operates on a 120V power source with a 9V battery backup to maintain protection during outages. This model wirelessly interconnects with up to 24 compatible Kidde alarms, ensuring whole-home alerts. Easy twist-off mounting and universal adapters simplify installation and maintenance. UL Certified and backed by a 10-year limited warranty, it meets rigorous fire safety standards for reliable, long-term home protection.

Specifications

Brand	Kidde
Style	Hardwired Smoke Detector
Power Source	Hardwired
Color	White
Item Weight	0.01 Pounds
Alarm	fire safety, ionization, wired, interconnected, tamper-resistant
Operating Humidity	up to 85% relative humidity, non-condensing
Compatible Devices	Up to 24 devices (of which 18 can be initiating)
Upper Temperature Rating	37.8 Degrees Celsius
Sensor Type	Ionization
Global Trade Identification Number	00047871260454
Number of Items	1
Manufacturer	Kidde Safety
UPC	047871260454
Part Number	RF-SM-AC
Item Weight	0.16 ounces
Product Dimensions	8.1 x 7.4 x 2.8 inches
Item model number	RF-SM-ACDC
Is Discontinued By Manufacturer	No
Pattern	Detector
Voltage	120 Volts (AC)
Item Package Quantity	1
Included Components	RF-SM-ACDC smoke alarm, mounting bracket and hardware, user manual, wiring harness
Batteries Included?	Yes
Batteries Required?	Yes
Battery Cell Type	Alkaline

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