Technical Specification for Data Modular Sync Device

1. General Description

• The Data Modular Sync is a custom-built electronic device designed for secure, one-way data transmission over the internet.
• The device ensures reliable, tamper-proof, and uninterrupted data communication for remote sites.

2. Functional Requirements

1. One-Way Data Communication
   • Device support unidirectional data transfer (Tx only).
   • No incoming communication or external control should be allowed to maintain data integrity and security.
2. Internet-Based Operation
   • Communication work over public or private internet networks.
   • Device automatically connect using Ethernet or optional 4G/5G modem.
   • Auto-reconnect functionality included in case of network downtime.
3. Data Encryption
   • All outgoing data packets be end-to-end encrypted.
   • Minimum encryption standard: AES-256, or equivalent modern encryption.
   • Secure key exchange must be supported (RSA-2048 or better).
4. Data Packet Handling
   • Support dynamic packet size.
   • Packet checksum or hash verification (SHA-256) must be used.
   • Buffer capability to store data temporarily if network unavailable.

3. Hardware Requirements

• Custom PCB design with industrial-grade components.
• Minimum components:
  • Microcontroller / Embedded Processor.
  • Secure cryptographic module.
  • Ethernet port (10/100 Mbps).
  • Optional GSM/4G/5G communication module.
  • Power input: 12V or 24V DC.
• Operating temperature range: 0°C – 55°C.