LC304-1PB Vandal proof door intercom: Reliable (M.T.B.F.: Over 50,000 hours), Vandal-Resistant, and Always Connected.
Imagine a school, a hospital, or a public building where security and communication are crucial. You need a reliable way to speak to visitors, grant access, or call for help—without worrying about vandalism or bad weather. That’s where our vandal-resistant door intercom comes in!
🧩 Choose Your Connection Type
The LC304-1B is available in four communication options to fit your infrastructure:
✅ Analog: Compatible with standard two-wire telephone lines, including analog PABX and PSTN.
✅ SIP/VoIP: Supports SIP 2.0 (RFC3261) with codecs G.711A/u, G.7231, G.729, and G.722, featuring PoE support for streamlined installation.
✅ Cellular (GSM/4G): Provides wireless communication, ideal for remote locations, reducing installation costs by eliminating the need for extensive wiring.
You can select your preferred model at checkout, making it easy to match your technical requirements.
Why Choose Our Door Intercom?
✅ Crystal-Clear Hands-Free Communication
With its loudspeaker and noise-canceling microphone, this intercom ensures clear two-way communication—even in noisy environments.✅ Built to Last in Any Condition
Housed in stainless steel with an IP65-IP66 rating, it withstands rain, dust, and even intentional damage. Perfect for outdoor gates, parking lots, metro stations, police stations, and more.✅ Vandal-Resistant Design
Equipped with tamper-proof screws and a durable metal button, this intercom resists break-ins and rough handling.✅ Multiple Connection Options
Available in Analog, SIP, GSM, and 4G versions, making it compatible with any communication system.✅ Quick & Easy Installation
Designed for on-wall mounting with a fast-fit terminal connection, it’s easy to set up without complex wiring.✅ Reliable & Maintenance-Free
Powered by the telephone line (Analog version) or external power (SIP, GSM, 4G), ensuring continuous operation without frequent maintenance.
Our door intercom isn’t just a communication device—it’s a safety solution that keeps people connected, secure, and protected. Upgrade your security today! 🚀
This phone is a hassle-free solution for critical communication, backed by our 2-year warranty and 15+ years of expertise. Contact us for a tailored quote!
LC304-1PB Vandal proof door intercom (VOIP, Analog, GSM or 4G)
1. Analog Version
Power & Connectivity
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Power Supply: From the analogue telephone network
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Supply Voltage: 24 VDC to 65 VDC
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Supply Current: 20 mA DC to 100 mA DC
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Communication Type: Full duplex
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Connection: Standard PSTN or analogue PABX
Casing & Durability
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Material: Stainless steel body
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Keypad: 1x Push button and internal keypad for programming
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Weather Resistance: IP66 (as per EN60529)
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Temperature:
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Operating: -13°F to +149°F (-25°C to +65°C)
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Storage: -31°F to +158°F (-35°C to +70°C)
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Weight: Up to 2.9 lbs (1.3 kg)
Audio & Operation
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Ringer Volume:
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80 dB(A) @ 1 meter
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110 dB(A) @ 1 meter (with external horn speaker)
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Dialing Method: DTMF mode (ITU-T recommendation Q.23)
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Hook Switch: No hookswitch
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M.T.B.F.: Over 50,000 hours
Package
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Unit Size: 4.3" x 6.3" x 2.8" (110 x 160 x 70 mm)
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Packaging Materials: Pearl cotton, carton
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Net Weight: 2.9 lbs (1.3 kg)
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Gross Weight: 4.4 lbs (2 kg)
2. SIP-VoIP Version
Power & Connectivity
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Adapter Input: 100-240V AC, 50–60Hz
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Adapter Output: 5V/1A DC
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Ports:
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WAN: 10/100Base-T RJ-45 (LAN, Auto MDIX)
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LAN: 10/100Base-T RJ-45 (PC, Auto MDIX)
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Power Consumption:
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Idle: 1.5W
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Active: 1.8W
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Main Chip: Broadcom
Network Features
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SIP Support: 2 lines SIP, SIP 2.0 (RFC3261)
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Codec Support: G.711A/u, G.7231 high/low, G.729, G.722, G.726
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Echo Cancellation: G.168, hands-free supports 96ms
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Supports: Full-duplex communication
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SIP Authentication: None, Basic, MD5
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Connectivity: PPPoE, VLAN, STUN penetration, DHCP (WAN Port)
Casing & Durability
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Material: Stainless steel body
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Keypad: 1x Push button and internal keypad for programming
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Weather Resistance: IP54 - IP65
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Temperature:
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Operating: -22°F to +149°F (-30°C to +65°C)
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Storage: -40°F to +167°F (-40°C to +75°C)
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Weight: Up to 3.3 lbs (1.5 kg)
Audio & Operation
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Ringing Volume: Shrill warble tone 80 dB(A) @ 1 meter
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Hook Switch: No hookswitch
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M.T.B.F.: Over 50,000 hours
3. GSM/4G Version
Power & Connectivity
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Power Supply: 12V DC
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Power Consumption:
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Idle: 0.3W
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Active: 1.5W
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Communication Type: Full duplex
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Remote Programming: SMS-based configuration
Frequency Bands
A Version:
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Dual-Band WCDMA/HSDPA: 850/1900 MHz
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Quad-Band GSM/GPRS/EDGE: 850/900/1800/1900 MHz
E Version:
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Dual-Band UMTS/HSDPA: 900/2100 MHz
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Quad-Band GSM/GPRS/EDGE: 850/900/1800/1900 MHz
J Version:
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Dual-Band UMTS/HSDPA: 850(800)/2100 MHz
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Quad-Band GSM/GPRS/EDGE: 850/900/1800/1900 MHz
Casing & Durability
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Material: Stainless steel body
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Keypad: 1x Push button and internal keypad for programming
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Weather Resistance: IP54 - IP65
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Temperature:
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Operating: -22°F to +149°F (-30°C to +65°C)
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Storage: -40°F to +167°F (-40°C to +75°C)
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Weight: Up to 3.3 lbs (1.5 kg)
Audio & Operation
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Ringing Volume: 90–95 dB(A) @ 1 meter
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Hook Switch: No hookswitch
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M.T.B.F.: Over 50,000 hours
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