3 Digits, 7 Segment Temperature Sensor Box

It was designed to replace analog display in old freezer
- Box size in attached image
- The box was designed to hold an PCB 55x55x1,5mm in the middle
The box contains:
- 3 Digits, 7 Segment LED - https://www.aliexpress.com/item/Free-Shipping-10pcs-3-three-static-digital-display-module-max7219-chip-SPI-serial-decimal/1325991243.html?spm=2114.search0304.4.2.alOPkI

- ESP8266

- Temperature Sensor DS18D20

- Module SIM800A

- Dual Power 3.3 - 5v