Hi! I am working on bats. I am eager to mount low cost, light weight, long battery life navigation devices. I will also mount ibutton temperature and humidity sensor along with navigation device. The purpose of attaching navigation and temperature sensor to bat is to 1) measure temperature at the level of bat in the canopy of roost tree. 2). navigation device help recover temperature sensor in case temperature sensor is lost and also help track bats foraging areas. Requirement for temperature sensor and navigation device is 1) light weight (20-40gm) Measure temperature (-20 to+80) Humidity Measurement (95% RH to 100% RH) Extended battery life (>5 Years). I found out these devices Remora 2 (GPS 4G) https://www.digitalmatter.com/Devices/4G-GPS-Tracker-Devices/Remora2 and Ibutton Temperature Senor https://www.embeddeddatasystems.com/DS1923-F5--Hygrochron-Temperature-Humidity-iButton_p_101.html

Please suggest any better option for meeting my research objectives?

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