RF-V50 IP67 Waterproof 4G LTE 3G 2G GSM Elderly SOS Button Emergency Alarm GPS TrackerFeatures:1. Real-time positioning: query position information and adjust positioning interval, and navigate to find personnel.2. Historical track: View the movement track of any day within 90 days3. Fence:GPS fence: Compare the GPS positioning data and judge whether there is an alarm for entering or leaving the fence.WIFI fence: Compare the WIFI hotspots and judge whether there is an alarm in or out of the fence.4. Health:Calculate the amount of exercise, calorie consumption and exercise journey of people.Medicine reminder: Three different modes of medicine reminder settings: single; daily and customized; and you can record the voice of the reminder, etc.5. Call:Dial the locator phone: two-way talk.Voice monitoring: ask the locator to call back the specified number and listen to the sounds around the wearer6. Command setting: make relevant settings for the positioner, for example:The master number is used to receive alarm informationSOS SOS phone alarmFall Detection Sensitivity and Fall Alarm SettingsCall Answering Modes: Mute, Auto and Key AnswerBuzzer Sound Lookup: The locator will make a sound. It is convenient to find the target more quickly.SMS alarm switchRemote restart, shutdown or factory reset, etc.7. Message list: Displays all alarm lists of the locator, including offline, low battery and entry and exit of the electronic fence, etc.8. Reminder settings: Open all to receive an alarm push. Please be sure to enable the relevant push permissions in the app permissions of your phoneGPS:GPS:1. Chip model: TD10302. GPS signal: L1, 1575.42MHz CA code3. Number of GPS channels: 72 channels4. GPS chip receiving sensitivity: -163dBm, capture: -147dBm5. GPS positioning accuracy: 5-15m6. GPS Antenna: LDSCeramic Antenna7. AGPS: Support8. AGPS fast positioning time: 28 seconds for cold start9. LBS positioning accuracy: 100-1000M (based on A