Features: This wireless nurse call button features one touch emergency alerts with 150m range, 85dB adjustable alarms, and 12 month standby via magnetic charging for reliable safety in hospitals, schools, or homes. BuiltS with lightweight ABS/silicone materials and IPX7 waterproofing, the wrist alarm combines comfort with elderly friendly circular touch button design. Ideal for seniors requiring fall detection, children needing quick assistance, or patients seeking instantly nurse communication in healthcare facilities. Perfect for classroom emergency notifications, elderly homeS care monitoring, or hospital patient nurse coordination through its long range wireless nurse call system. The magnetic charging school call system eliminates frequent charging hassles while maintaining clear signal transmission across multi floor environments. Specifications: Component:ABS Size:Approx.60x14x40mm/2.36x0.55x1.57inch Working voltage: DC3.7V Working frequency:433.92MHz Working current:57mA±10mA(buzze rmode) 95mA±10mA(vibration mode) Standby current:<8mA Power-offcurrent:180±5uA Receiving sensitivity:-108dBm Package Includes: 1 Set Wireless Caller note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.