The CR123A 3V Lithium Battery is a common battery used with wireless devices. Brand may vary from picture.
cr123 Batteries - Alarm Grid
Duracell CR123 3v Lithium Battery - Pack of 1
Rapthor CR123A 3V Lithium Batteries 20 Pack 1650mAh High Power CR123 CR17345 for Flashlights Microphone Toy Smoke Detector Alarm System Non-Rechargeable CR123 Photo Battery (Not for Arlo) : Electronics
Power Archives - SafeHomeCentral
Basics 6-Pack CR123A Lithium Batteries, 3 Volt, Up to 10-Year Shelf Life : Health & Household
Power Archives - SafeHomeCentral
Cr123a 3v Lithium Battery
High capacity lithium battery
CR123A 3V Lithium Battery - SafeHomeCentral
8 Best CR123A Battery For Smoke Detector
CR123A 3v Lithium Batteries - Stemar Security Systems
8 Best CR123A Batteries For Alarm Systems