Multi-interface Platform for Connecting Sensors spotIP67 Rating spotRich Industrial Interfaces spotFlexible Power Options spotNFC for Configuring Model - UC501 - UC502 Frequency - CN470/IN865/EU868/AU915/US915/KR920/AS923 Interface 1 - 2 × GPIO 1 × RS485/RS232 switchable 1 × 3.3 V output 1 × 5/9/12 V output switchable Interface 2 - 2 × analog input 1 × 3.3 V output 1 × 5/9/12 V output switchable Dimension - 120.1 × 120.1 × 55.4 mm (4.73 × 4.73 × 2.18 in) Power Supply - Rechargeable 4900 mAh battery with solar panel - Non-rechargeable Built-in 19000 mAh Li-SOCl2 battery