Fig. 2
From: A multi-species evaluation of digital wildlife monitoring using the Sigfox IoT network
Overview of Sigfox tag prototypes for wildlife tracking. The tag designs (E–K) are based on four different electronic circuit boards (A–D). We integrated the circuit boards into differently designed tracking devices, consisting of a power source (LiPo battery: E, F, G, J, supercapacitor: H, I, K), an optional source for generating power (solar cell: E–J, kinetic harvesting module: K), a 3D-printed housing (thermoplastic polyurethane [TPU]: E, I, polymethyl methacrylate [PMMA]: H, nylon polymer [PA12]: F, G, polyethylene terephthalate glycol [PETG]: K), an attachment method (ear tag: E, I, collar: F, J, backpack: G, H, as counterweight: K), and waterproofing (epoxy: E, I, clear coat spray: F, G, K, shrink tube: J, urethane coating: H)