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DRAFT
The Cudy MT500 is a Cat41) LTE modem and AC12002) wifi router/repeater. There is relatively little documentation so this page attempts to collect what there is.
The router is powered by 12vdc, 1A adapter, so should be easy to run off house power.
The MT500 is related to the MT3503), and MT4504) It is not immediately clear what the difference is between 450 and 500. When checked, firmwware v.1.3.6 for both was byte-for-byte identical:
md5sum *.bin **2f4ce9b89723dfa91bd44f6291ee1d60** LT450-R9-1.13.6-20220317-193822-flash.bin **2f4ce9b89723dfa91bd44f6291ee1d60** LT500-R9-1.13.6-20220317-193822-flash.bin