For Smoke Alarm, Clock, Walkie-talkie, Gas Detector - 9V - 628 mAh - 9 V DC - 12 Pack
- Alkaline battery - Higher energy density to produce the same energy while lasting longer
- Delivers 9 V DC to your compatible smoke alarm, ensuring that your device is ready to use when needed
- 9V battery - A convenient spare for your smoke alarm, giving you peace of mind