The CR123A 3V Lithium Battery is a common battery used with wireless devices. Brand may vary from picture.
Enegitech CR123A Lithium Batteries, 123 3V Battery 1600mAh for Security System Camera Door Window Alarm Contact Flood Sensor Motion Detector Flashlight Laser Pointer Doorbell Non-Rechargeable 6 Pack : Everything Else
Panasonic 30212 Lithium 3V Photo Lithium Battery cr123 (Double Pack)
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
Rechargeable 3V Lithium Ion CR123A Battery
CR123A 3V Lithium Battery - SafeHomeCentral
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8 Best CR123A Batteries For Alarm Systems
CR123A 3v Lithium Batteries - Stemar Security Systems
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DURACELL HIGH POWER LITHIUM CR123 BATTERY 3V