Product Name: Professional IP Voice Door Phone Emergency Telephone Speaker Phone Knzd-51 Model NO.: Knzd-51 Customized: Customized Accessories: Telephone Cords Answering Machine Record Audio Format: MP3 Cordless Telephone Frequency: DECT 6.0 Voice Mail: Not Support Voice Mail Dial: DTMF Touch Screen: Without Touch Screen Display: Without Display Function: Industrial Telephone Type: Key Phone Color: Yellow, Red, Gray Hook: No Handset: No Keypad: No Door: Yes Robust: Yes Weatherproof Degree: IP65 Button: Yes Analogue, VoIP: Optional Vandal Resistant: Yes Trademark: Kntech Transport Package: Kntech Standard Carton Packing Specification: CE, RoHS, ISO9001: 2008, SGS, IP66, FCC, EMC Origin: Shenzhen HS Code: 8517180090 Product Description Koontech professional IP Voice Door Phone Emergency Telephone Speaker Phone Knzd-51Product Name:Koontech IP voice door phoneProduct model:Koontech KNZD-51size:230*126*76.5MMKNZD-51 IP voice access telephone using advanced technology and the security and stability of Broadcom master chip, greatly improve the system's stability and durability while SIP2.0 standards-based protocol that can be perfectly compatible with all current mainstream SIP-based IP PBX / softswitch, IMS platforms such as Asterisk, Broadsoft, 3CX, Elastix, etc. for users to quickly deploy equipment more convenient.KNZD-51 pan with a high-strength cold-rolled steel, with high-quality aluminum shell, impact resistant up to IK10 standard. Its product features and production process materials are inherited KOonTECH special industrial telephones high quality, high demand and so on. Product modeling beautiful, stylish, elegant, functional and practical, reliable, easy installation, comfortable buttons and low power consumption. Popular with customers welcome, is widely used in apartments, hospitals, schools, subways and other places.Feature1.Built-in dynamic noise reduction, to achieve high-quality voice communications2.With light on metal Keyboard3. Support two SIP account4. High-strength cold-rolled steel housing and high-quality aluminum shell, impact resistant up to IK10 standard5. Support RFID, remote and password door open6. Access control, intercom and IP broadcast triple feature integration7. Support SIP2.0, support SIP2.0(RFC3261) and related RFC protocol8. Using Web online configuration, easy to manage9. Support safe mode, and can be upgrade the software.SpecificationButton: 12 full keypad with light and one handset free button or speed dial buttonRJ45 network port x2: network x1 (Support 802.3af Class 1 POE)PoE: 802.3af (Class 0 - 12.95W) 48V/380mA(Not a standard design)Master chip: BroadcomAudio Amplifiers: 2.5WPowered: 12V+-15%/1A DC or POEMaterial: Cold-roll steel sheets, Aluminium alloyWeatherproof degree: IP55Humidity: 10%-95%Temperature: -40~70ºCProduct Size: 230*126*76.5 mmN. W: 1.6kgInstallation