Custom design of hardware electronics with the following specifications:

General Specifications

• Board Dimensions up to: 120mm x 80mm x 1.6mm

Electrical Specifications

• Voltage Rating: 3.3V, 5V
• Current Rating: 3A max
• Impedance Control: 50 ohms and 90 ohms

Component Specifications

• Component Type: SMD, 0402 size
• Connectors:
• USB Type-C
• GSM antenna connector
• Wi-Fi/Bluetooth antenna connector
• 2x DS18B20 temperature probe connectors
• Lithium polymer battery connector
• Internal Sensors: BME280 (temperature and humidity), voltage sensor

Thermal Management

• Temperature Range: -40°C to +85°C

Mechanical Specifications

• Mounting Holes: 4 holes, 3mm diameter
• Board Shape: Rectangular with specific cutouts

Special Features

• Extreme Power Saving: Low-power MCU, power management ICs, deep sleep modes
• Connectivity: Wi-Fi, Bluetooth, GSM
• User Interface: Power switch, 3 LEDs

Design Documentation

• Bill of Materials (BOM): Excel format
• Assembly Drawings: Gerber Files ready to order fabrication online