Release 4.0 highlights the MT680's data capabilities:
From typical R4.0 content, the MT680 features: Hytera Mt680 Tetra Mobile Terminal Owners Manual R4 0
To operate the Hytera MT680 TETRA mobile terminal, follow these basic procedures: Release 4
The manual details environmental ratings (e.g., IP54 for dust/splash resistance) and operating temperature (-25°C to +55°C). Hytera Mt680 Tetra Mobile Terminal Owners Manual R4 0
Supports TEA1, TEA2, TEA3, and TEA4 encryption algorithms.
This feature allows a dispatcher to activate the microphone of an MT680 remotely to listen to the environment inside the vehicle. The manual stresses legal compliance before use.