I. Function Overview
1. Pole-mounted installation, cold-rolled steel surface with plastic coating, customizable color, aesthetically pleasing appearance.
2. Supports SIP 2.0 protocol, capable of registering two SIP accounts.
3. 30mm emergency button, hands-free one-touch direct call, configurable for auto-answer incoming calls, detects busy tone to hang up.
4. Built-in 2W speaker and AEC algorithm, supports audio output interface.
5. Integrated shell molding, designed for waterproof, dustproof, vandal-resistant, and anti-corrosion.
6. Supports audio input interface for external active speakers.
7. Supports DTMF remote gate opening.
8. Features a QR code display window.

II. Operation and Usage
1. Power On/Off: Controlled via the hands-free button.
2. Answering Calls: When there is an incoming call, the phone rings; press the hands-free button to communicate with the caller, or wait for auto-answer.
3. Making Calls: Press the hands-free button to dial; lightly tap the button to end the call after conversation.
III. Main Technical Parameters
1. Supports connection to various types of network switches and SIP broadcast dispatch servers.
2. Temperature: -35℃ to 75℃; Relative Humidity: 10% to 90%; Atmospheric Pressure: 86 to 106 Kpa; Ambient Noise: ≤100dB(A). 
3. Power Supply: DC 9-12V/1A or POE.
4. Audio Quality: Full-duplex echo cancellation (AEC) – hands-free mode.
5. Protection: Shell protection rating IP65, impact resistance rating IK10.
6. Call Distance: ≥90CM