Audio intercom KNZD-39

emergencyhelp pointfor hazardous areas

Product
Analogue gate door phone KNZD-39, aluminium alloy die-cast body, IP55 protection. Available in PSTN (analogue) and VoIP (SIP) variants.

Model / Basic info
Model: KNZD-39
Size: 306 x 187 x 60 mm
Material: Aluminium alloy die-cast body
Ingress protection: IP55
Service temperature: -30°C to +75°C (depending on configuration)

Features

• Cold-rolled steel/aluminium die-cast housing with powder-coated UV-stabilized polyester finish.
• IP55 rated for dust and water resistance; weather resistant for outdoor/industrial installations.
• LED indicator for incoming calls and hotline status.
• Lightning protection compliant with ITU-T recommendations.
• Handset with hearing-aid compatible receiver and noise-cancelling microphone.
• Industrial strong armored handset cord.
• Phone integrity wiring for line presence monitoring.
• Optional 7-minute auto time-out to release the line if handset is left off-hook.
• Reflective label on housing for easy identification.
• Typical applications: tunnels, metro, railway, LRT, highways, marine, ship, offshore, mines, power plants, bridges.

Certification
EN55022 (emissions); EN55024 (immunity); EN50121 (Railway EMC).

Packaging
1 unit per box; Net weight: 2.5 kg; Gross weight: 4 kg.

Application
Designed for harsh and safety-critical environments including tunnels, metros, railways, light rail, highways, maritime and offshore installations, mines, power plants and bridges.

System / Additional info
Available as PSTN analogue telephone (DTMF) and VoIP SIP telephone variants. IP version supports web-based configuration, non-volatile flash memory, DHCP/static IP and remote management. Supports both analogue and IP network operation depending on model.

Specifications / Technical data

• PSTN analogue telephone with DTMF dialing.
• MTBF: 100,000 hours.
• Connection: RJ11 screw terminal pair cable or RJ11 socket/plug; stainless-steel terminal option available.
• Ringing sound level: >70 dB(A).
• Compatible with SPC exchange, PABX and dispatching systems with feeding voltage 33–60 V.
• Memory: up to 12 groups of numbers, each up to 16 digits.
• Operating conditions: Ambient temperature -30°C to +60°C (service range up to +75°C cited); Relative humidity 10%–95%; Atmospheric pressure 86–106 kPa; Background noise <60 dB(A).
• VoIP version: SIP 2.0, DTMF support, full-duplex 2-way hands-free communication.
• Protocols: IPv4, TCP, UDP, TFTP, RTP, RTCP, DHCP, SIP.
• Network: 10/100 Base-TX Ethernet, RJ45, Cat5e or better; PoE (802.3af) supported on IP version.
• Auxiliary contacts (IP variant): 1 dry contact output; rated load 0.3 A @125 VAC, 1 A @30 VDC; max switching voltage 125 V / 60 VDC.
• Programming and management: Non-volatile flash memory; Web GUI configuration; supports DHCP/static IP; remote management and centralized monitoring.
• Network features: PoE (802.3af), IEEE 802.1x NAC, STP/RSTP support.