CallToU 2PCS Caregiver Pager for Elderly Seniors Patient Disabled Home intercom medical alert aystem What type of lithium-ion battery

What type of lithium-ion battery is used on the side of the transmitter sensor

Setting up your CALLTOU Wireless Home Security System is a breeze

The battery type is a CR2 3V lithium-ion battery

cook in the kitchen or read in the garden

Home Security: The outdoor motion sensor alarm can be used to enhance the security of your home

CallToU 2PCS Caregiver Pager for Elderly Seniors Patient Disabled Home intercom medical alert aystem What type of lithium-ion batteryAbout this item Not need to Yell to Get Someones AttentionGive Both Caregiver and Patient Elderly Resident Handicapped Sick Freedom while Still calling for Help at home. Great for Outdoor and Indoor Activitiesup to 4 miles with no obstructions,perfect for family camping, hiking,fishing,shopping, traveling, football games, CS games etc. Also kids can talk to their neighbor friends at home when raining or at night. Friendly Design16 channels,VOX Hands